**Swimming Techniques and Training Approaches**

Glenn and Aaron discussed swimming techniques and training approaches, particularly inspired by Cameron McAvoy's recent 50-meter world record performance. Glenn explained how their weekly theme discussions evolved from detailed video analysis during COVID to focusing on technical endurance and training specificity. The conversation highlighted how modern swimmers like McAvoy practice at race pace more frequently than traditional approaches where athletes might only hit race pace twice a year during actual competitions.

**Swimming Coaching Evolution Discussion**

Aaron and Glenn discussed the evolution of swimming coaching approaches, with Aaron sharing insights from listening to a coach's interviews about differentiating between physical and psychological fatigue in swimming. Glenn reflected on his experience training under Dave Salo, emphasizing the importance of race-specific training rather than general fitness. The conversation touched on modern trends in swimming coaching, including the integration of mental and physiological training approaches, and the need to make swimming more engaging for young athletes through gamified skill development while maintaining proper aerobic base training.

**Backstroke Technique Discussion**

Glenn shared a video of Aaron Peirsol swimming backstroke to demonstrate a unique swimming technique that focuses on body maneuverability and connection from head to toe. Aaron explained that backstroke allows for a different kind of body movement compared to freestyle, with the arms behind the swimmer requiring manipulation of the body and a one-arm pull-out motion. He described how observing weight room exercises inspired his approach to swimming, particularly noting the connection between the arms and legs in pole vaulting exercises.

**Swimming Techniques and Performance Data**

Aaron discussed swimming techniques, particularly focusing on the importance of leg rhythm and harmony between arms and legs in swimming strokes. He explained how backstroke can be easier to balance compared to freestyle due to breathing patterns. Glenn then showed Aaron data from an app, highlighting impressive performance metrics including minimum 13 yards on every breakout and 4 cycles on most lengths, except for the third length which had 3.5 cycles.

**Youth Swimmer Performance Improvements**

Aaron and Glenn discussed the significant performance improvements observed in younger swimmers compared to previous generations. Aaron expressed skepticism that improved training methods alone could explain the difference, suggesting that psychological factors and changing perceptions of performance limits might play a larger role. Glenn proposed that the improvements could be attributed to a higher percentage of coaches implementing specific techniques, particularly around underwater swimming, with consistent daily practice leading to measurable gains over time.

**Swimming Techniques and Training Approaches**

The group discussed swimming techniques and training approaches, with Glenn emphasizing the importance of being intentional and precise rather than focusing solely on distance. Doug noted that modern training prioritizes technical endurance over traditional high-volume approaches, allowing swimmers to develop and practice specific skills at high integrity. The discussion concluded with Doug asking about Eddie's technical abilities, particularly highlighting how his technique might not receive enough recognition despite Texas's legendary swimming program.

**Eddie's Competitive Swimming Environment**

Aaron reflected on his experience swimming with elite athletes under Eddie's coaching, noting that the environment and high-level competitors pushed swimmers to improve naturally rather than through technical stroke changes. He observed that the talented swimmers like Crocker, Neal Walker, and Nate Doosing were already performing well, and Eddie was effective at identifying and encouraging promising athletes to thrive in that competitive environment. Aaron acknowledged that while Eddie had technical expertise, the neurological habits of college-age swimmers made it difficult to significantly alter their strokes, and the best results came from the natural competitive pressure rather than explicit technique modifications.

**Swimming Techniques and Strength Training**

The group discussed swimming techniques and development, with a focus on how strength training outside of water can benefit swimmers. Glenn shared insights about his experience at Texas, emphasizing how intentional strength training helped him transition to swimming like an adult. The discussion also touched on the balance between technique development and physical growth, with Glenn noting that some current training processes have a better understanding of hydrodynamics than previous methods.

**200m Backstroke Training Differences**

Aaron discussed the differences between training for the 100-meter and 200-meter backstroke events. He explained that while you can train for the 100 and potentially perform the 200, the reverse is not true due to the different physiological demands of each race. Aaron emphasized the importance of maintaining tension during the third 50 meters in a 200-meter race and highlighted the unique balance required between strength and aerobic capacity in 200-meter training, noting that training for the 200 limits how much weight one can gain compared to training for the 100.

**Swimming Performance and Technique Discussion**

Aaron and Glenn discussed the differences between short course and long course swimming performances, noting that swimmers often perform better in short course due to the ability to rely more on strength. They explored the importance of engaging the obliques in swimming, using the analogy of pulling a body out of water to illustrate the need for core compression and connection from fingertips to toes. Glenn referenced a previous discussion about how all elements of swimming must work together, like an eight-person rowing crew, and shared his personal struggle with never being fully satisfied with his achievements.

**Swimming Technique and Career Breaks**

Glenn and Aaron discussed the challenges of achieving a perfect swimming stroke and the importance of taking breaks in a career. Aaron shared his experience of stepping away from swimming for extended periods, which helped him return with renewed energy and perspective. He emphasized that slowing down and taking breaks is crucial for making lasting changes in technique, though this goes against the typical high-intensity culture in swimming. Glenn concluded by sharing a personal story about a break Aaron took with friends, which later led to Aaron breaking a world record, highlighting the value of balance and enjoyment in the sport.

**Ocean Swimming Technique Training Session**

Aaron shared his experience teaching swimming techniques in challenging ocean conditions, emphasizing how experienced swimmers can benefit from learning to navigate moving water. He described bringing two world-class swimmers, Brandon Hanson and Ian Crocker, to experience big waves, which helped them develop a new skill set and stay engaged with the water. The group discussed the importance of getting out of their comfort zones and learning to adapt in different water environments. It was noted that Aaron would not be available next week, and Alex would return the following week.


April 1, 2026 - Aaron Peirsol - Backstroke & Other Stuff

A short, soundless clip showing how Aaron keeps his kick continuous during backstroke.


Aaron's Kick

Sign up for Wayne's substack:

<https://waynegoldsmith.substack.com>

Sign up for Doug's substack:

<https://swimpler.substack.com/>

**Swimming World Record Discussion**

Glenn and Wayne discussed a recent swimming world record performance by Cam McAvoy, noting the impressive velocity maintenance and positive feedback about McAvoy's character. Wayne raised concerns about potential misinformation regarding McAvoy's training methods spreading online, which could present challenges for coaches. The discussion then transitioned to the topic of technical endurance, with Glenn introducing the concept and mentioning that Doug had suggested this topic for discussion. The meeting began with Glenn expressing concern for friends affected by recent global events, including those in Iran and around the world.

**Swimming Technical Endurance Training Discussion**

Glenn and Wayne discussed the importance of technical endurance in swimming, emphasizing the need for proper technique, skills, and mental composure during endurance training. Wayne explained that coaching should focus on achieving maximum speed with race mechanics, straight-line swimming, and mental control, rather than just meeting heart rate or lap targets. He noted a recent trend toward greater accuracy and precision in swimming programming.

**Swimming Coaching Techniques Discussion**

Glenn shared his experience coaching a 58-year-old former NFL player who is learning to swim a 50 free, highlighting the player's progress and coachability despite initial challenges with technique. Doug discussed his approach to coaching, emphasizing the importance of technical endurance and sharing a story about a challenge he gave to senior swimmers to demonstrate the importance of maintaining technique under fatigue. Both speakers agreed on the significance of building technical endurance through gradual progression and consistent practice of proper technique.

**Technical Endurance in Swimming Training**

Doug explained his concept of "technical endurance" in swimming, describing a training approach called the "Butterfly Gauntlet" that gradually increases difficulty while maintaining consistent stroke patterns and breathing. He emphasized that swimmers often break down their technique during fatigue due to the increased resistance required to maintain proper form during high-intensity sets. Doug suggested that coaches should focus on helping swimmers maintain technique under fatigue and recommended testing swimmers' ability to perform continuous butterfly strokes before introducing more challenging sets.

**Technical Endurance in Swimming Training**

Glenn presented his concept of "technical endurance" in swimming, developed through discussions with AI, focusing on training athletes to recognize and push their technical limits without breaking down. He discussed how swimmers often operate in a "gray zone" without fully understanding their technical ceiling, drawing parallels to other sports like golf, diving, rowing, and cycling to illustrate the importance of proper technique, body position, and system synchronization. Glenn emphasized that swimmers must learn to recognize technical failure as catastrophic and stressed the importance of starting with proper fundamentals, particularly learning to float correctly, before building technical endurance.

**Swimming Technique and Coach Focus**

Doug discussed the importance of technique in swimming, explaining how automaticity can hinder neuroplasticity and prevent athletes from improving their skills. He emphasized the need for swimmers to focus on foundational elements before advancing to more complex techniques, citing research on motor learning and the example of Michael Phelps. Glenn shared a recent experience with a young swimmer from the UK who was double breathing, highlighting the importance of proper observation and correction by coaches. Both speakers agreed that coaches should pay close attention to technique and make adjustments when necessary to prevent bad habits from forming.

**Swimming Technique and Conditioning Balance**

Wayne discussed the balance between technical conditioning and aerobic development in swimming, sharing insights from his experience managing Australia's largest learn-to-swim program. He explained how commercial learn-to-swim programs often prioritize getting children to swim full laps quickly, which can compromise technique, particularly breathing patterns. Wayne emphasized the importance of accuracy and precision in training, noting a shift towards varied training approaches rather than consistent high-volume sessions, and shared a drill involving 650-yard swims at progressively faster paces to help athletes develop efficient stroke mechanics under fatigue.

**Technical Swimming Development Strategies**

Wayne discussed the importance of technical development workouts being conducted at race pace rather than slow speeds, explaining that coaches often focus too much on drills at kicking speed without properly testing technique under fatigue. Glenn and Wayne explored how commercial imperatives in learn-to-swim programs conflict with technical development, as parents prefer to see laps rather than technical drills. The group discussed teaching methods, with Doug suggesting starting backstroke lessons by having students kick on their back first to establish proper body position before adding arm movements, rather than starting with freestyle which can create imbalances. Mike expressed how Wayne's insights were causing him to rethink his entire coaching program and praised the discussion for its intellectual depth.


March 24, 2026 - Technical Endurance

**Championship Preparation and Tapering Strategies**

Glenn and Alex presented a session focused on championship preparation and tapering strategies in swimming. Glenn shared insights about readiness during warm-ups and emphasized the importance of being present-minded rather than overthinking preparation. Alex demonstrated his detailed setup and sequences for preparing athletes, which Glenn praised highly. The session included a preview of a new app being developed for GoSwim, though the specific details and functionality were not disclosed in the recording.

**Age Group Swimming Taper Strategy**

Aleks presented a video recording of a championship season workout for 13-and-over swimmers preparing for an age group state meet. He explained his approach to tapering, which involves cycling through sprint, pace, and aerobic days, with the day before a meet typically being an aerobic day focused on technique and low-intensity swimming. Aleks described his workout structure, which starts with land-based warm-up activities (10-20 minutes) to maximize pool time in their crowded facility, followed by skill development and preparation phases before performance elements. The presentation included raw footage showing real coaching situations, including moments where swimmers didn't follow instructions perfectly, demonstrating the challenges of group coaching in practice.

**Optimizing Practice and Athlete Independence**

Aleks discussed his approach to managing practice timing and structure, explaining how he creates opportunities for faster swimmers while allowing slower ones to prepare at their own pace. He described implementing a consistent daily warm-up routine that helps develop athlete independence, particularly during championship preparation periods. The warm-up includes a "cheetah" drill (1225 variable sprint) and focuses on teaching athletes to adapt the routine for different environments. The session concluded with Aleks explaining their skills work, which includes underwater kicking drills and the use of fins to enhance technique development.

**Swimming Drills and Technique Review**

Aleks demonstrated various swimming drills to Glenn, including sidekick, pro drill, 3-tap, and pause drill, explaining the techniques and proper form for each. Aleks emphasized the importance of slowing down and feeling the water pressure during the pro drill and noted that some athletes were rushing through the movements. The drills were designed to focus on balance, extension, and recovery in preparation for upcoming meets.

**Optimizing Stroke Efficiency in Swimming**

Aleks demonstrated a "mini-max" swimming set that helps swimmers optimize stroke efficiency while maintaining speed. The set involves swimming 25, 50, and 100-meter freestyle distances with specific stroke and time targets calculated from the initial 25-meter performance. He showed examples of two athletes successfully completing the set, with one notable case of a 13-year-old swimmer who used stroke counting techniques to achieve a senior state cut time in the mile. The discussion concluded with a debate about race strategy, where Aleks emphasized the importance of giving swimmers specific, actionable cues rather than just telling them to "go race," while other participants shared their approaches to helping young swimmers develop race mentalities.


March 17, 2026 - Honing the Blade for Championships

**Swimming Performance Data Analysis**

Aleks discussed the importance of analyzing swimming performance data, particularly focusing on "development per cycle" rather than just "distance per cycle." He explained how Zionsville's swim team collects extensive data through parent-filmed races and coach recordings, with approximately 160 out of 300 families having activated accounts to track their swimmers' performance. Aleks presented a chart showing the team's overall distance per cycle metrics across different grade levels and performance groups, with the goal of eventually reaching gold medal status in USA Swimming.

**Swimming Performance Metrics Analysis**

Aleks explained the differences between Senior 1, Senior 2, and High Performance swimming groups, noting that Senior 2 serves as an on-ramp for newer swimmers. He analyzed data on distance per cycle and tempo for different age groups, revealing that the High Performance group had a higher distance per cycle than the national team in the 100 freestyle. Aleks emphasized the importance of balancing distance per cycle and tempo in training, as they are closely related metrics that together provide a comprehensive view of a swimmer's performance.

**Stroke Tempo and Youth Swimming**

Aleks and Glenn discussed the relationship between stroke tempo and body growth in young swimmers, noting that as swimmers grow longer but may not yet be stronger, their tempo can naturally slow down. Aleks shared his experience coaching junior swimmers, explaining how he helps them balance tempo and stroke count to improve performance. They also touched on the importance of careful tempo management in training, particularly for younger athletes. The conversation concluded with a question about whether dividing distance per cycle by height or wingspan could provide valuable insights, though this was left unresolved.

**Individualizing Swimmer Training Data**

Glenn and Aleks discussed the importance of individualizing training data and tempo for swimmers, emphasizing that averages can provide insights into team performance but may not fit every athlete. Aleks highlighted the need to focus on distance per cycle for young swimmers, stating that in an ideal scenario, they would prioritize catch-up freestyle and sprint kicking. They also discussed the long-term nature of developing elite swimmers and the importance of maximizing distance per cycle to prepare them for future tempo-based training.

**Optimizing Youth Athlete Development**

Glenn and Aleks discussed the challenges of developing young athletes, emphasizing the need for patience from parents, athletes, coaches, and society. Glenn highlighted that focusing on short-distance training can negatively impact long-term success, as it does not align with the central nervous system's development for sustained performance. Aleks presented data on velocity, distance per cycle, and tempo, explaining how these metrics contribute to understanding an athlete's performance and technical application. They also discussed the importance of underwater performance, noting that elite swimmers, such as those on the U.S. national team, spend significantly more time underwater compared to their high-performance counterparts, which contributes to their overall speed advantage.

**Swimming Performance Data Analysis**

The meeting focused on analyzing swimming performance data using a specialized app that tracks underwater speed and distance per cycle. Aleks presented findings showing that national team swimmers maintain consistent breakout points, while Zionsville athletes' underwater performance varies, highlighting a need for improved training techniques. Glenn demonstrated how the app can be used to identify and improve swimming techniques, emphasizing the importance of early exposure to data analysis for swimmers. The group discussed the potential for broader adoption of this technology in swimming coaching and training.

**Exploring UMAP for Data Insights**

Monty and Glenn discussed the potential of using UMAP (Uniform Manifold Approximation and Projection) as an analytical tool for their extensive dataset, which includes biometric data like weight and age. Monty suggested exploring the data further to uncover insights, emphasizing the power of UMAP in visualizing high-dimensional data and tracking trajectories. Glenn highlighted the importance of empowering users to adjust their performance trajectories, particularly in athletics, by leveraging the geometric potential of small improvements. Monty offered to connect them with an expert if they decide to pursue this analysis, while Joshua, a co-engineering major, expressed admiration for the app's capabilities and the innovative work being done.

Monday

<https://www.goswim.tv/lessons/2321-all-strokes-stroke-count>

The secret to holding great technique when things get tough? Count your strokes. 💪 #SwimTips #SwimmingTraining #SwimLife #PoolWorkout #SwimCoach #AthleteTraining

Tuesday

<https://www.goswim.tv/lessons/3423-ep-lesson-tempo-and-loping>

Great technique isn't built overnight — it's built rep by rep. 💪 #SwimTraining #StrokeWork #SwimCoach #FreestyleTips #SwimSmart #AthleteTraining

Wednesday

<https://www.goswim.tv/lessons/3012-increase-freestyle-stroke-rate>

Stop swimming harder. Start swimming smarter — find the rate that lets you just flow. 💧 #SwimTips #FreestyleSwimming #SwimCoach #OpenWaterSwimming #Triathlon #SwimFast

Thursday

<https://www.goswim.tv/lessons/1710-freestyle-building-a-longer-stroke>

Want to build better strokes in your age group swimmers? This long-term tempo trainer approach is a game changer. ⏱️ #SwimCoaching #TempoTrainer #AgeGroupSwimming #SwimTech #CoachTips #SwimFast 

Friday

<https://www.goswim.tv/lessons/1009-freestyle-discovering-efficiency-step-3>

Stroke count + speed + heart rate = the ultimate measure of swimming efficiency. 📊 #SwimmingTips #SwimEfficiency #SwimCoach #HeartRateTraining #SwimFast #TrainSmart

Saturday

<https://www.goswim.tv/lessons/1007-freestyle-discovering-efficiency-step-1>

Fewer strokes doesn't always mean more efficient. Here's what actually matters. 🏊‍♂️ #SwimmingEfficiency #FreestyleTips #SwimSmart #StrokeCount #SwimCoach #SwimLife

Sunday

<https://www.goswim.tv/lessons/2986-drop-and-push-angled>

Small adjustments off the wall can make a big difference in the water. 💧 #SwimmingTips #WallTechnique #SwimCoach #FreestyleSwimming #SwimFast #SwimLife 


Feb 24, 2026 - How to Analyze Age-Group Team Data

We've gone off script for the past few weeks, so I feel it's just better to put the Zoom AI summary text into this description than anything else.

**Winning the First Yard in Swimming**

Doug Cornish, a former technique-first coach with 23 years of experience, delivered a presentation on the critical importance of winning the first yard in swimming. He explained that elite swimmers create more velocity off the wall and slow down less between walls, emphasizing that winning the first yard is essential for success in races. Doug discussed the four sources of power in a push-off and the importance of proper setup and practice to improve performance. He also highlighted the significance of using visual cues, such as the lane rope and the shimmery surface of the water, to maintain the correct position during turns and push-offs.

**Swimming Turn Techniques Discussion**

Doug and Glenn discussed swimming techniques, focusing on turn strategies and the importance of maintaining the correct body position during turns. Doug emphasized the significance of the tailbone to fingertip line in determining the direction of movement and highlighted the need to minimize time on the wall while maximizing power. They also discussed the debate around hip distance from the wall, with Doug suggesting that coaches should adjust techniques based on individual swimmer needs. Glenn added that limb length and power-to-weight ratios should be considered when teaching turns.

**Swimming Technique Analysis Discussion**

Glenn and Doug discussed swimmer techniques, focusing on turn efficiency and underwater dolphin kicks. They analyzed videos of Olympic-level swimmers to identify optimal positions and movements, emphasizing simplicity and precision in coaching. Glenn highlighted the importance of maintaining velocity post-turn and shared insights from a video by Ricky Barons, who demonstrated strategic adjustments in underwater kicks based on fatigue. Doug noted that higher-level athletes are more receptive to identifying and correcting mistakes to improve performance.

**Butterfly Kick Technique Discussion**

Doug and Glenn discussed techniques for improving a swimmer's butterfly kick, focusing on the balance between belly side and backside positions. Doug emphasized the importance of holding water in both directions, particularly for younger swimmers who should aim for 80% belly side to avoid slowing down. He explained that elite swimmers often use a reverse kick that is as propulsive as their forward kick, but this is not common among age group swimmers. The discussion included analyzing video footage to demonstrate these concepts and the need for proper technique to maintain speed during underwater kicks.

**Swimming Technique Kick Discussion**

Doug and Glenn discussed swimming techniques, focusing on the importance of the kick for young swimmers. They emphasized the need for a majority of the kick to be on the front side of the body, particularly for those under 10 years old. They also analyzed videos of elite swimmers to demonstrate proper technique, highlighting the importance of keeping feet connected to the water in butterfly strokes.

**Swimming Kick Technique Instruction**

Doug emphasized the importance of teaching children the correct technique for swimming kicks, particularly the A-frame structure achieved through hip rotation rather than focusing solely on foot movement. He explained that proper kicking involves holding water on the up kick and catching water with the whole foot on the down kick, contrasting with current coaching methods that rush children into adding arm movements before mastering kicks. Glenn shared a historical video from 2003 demonstrating similar techniques, while Steven expressed interest in implementing these teachings with his staff and noted the importance of proper technique in competitive swimming.

**Swimming Push-Off Techniques Discussion**

The group discussed swimming techniques, focusing on the importance of push-offs and turbulence created by swimmers. Glenn presented a model demonstrating how swimmers' speeds and push-off forces affect their performance at the wall. He showed that increasing the push-off force and distance can improve a swimmer's performance, even if their speed remains the same. The discussion highlighted the need to adjust push-off parameters to gain an advantage, with Glenn suggesting that teaching these techniques could help swimmers improve their times.

**Swimming Technique and Technology Discussion**

The group discussed improving a swimmer's breakout point and underwater dolphin kicks, achieving a win by 0.03 seconds after adjustments. Doug explained a technique for practicing the butterfly kick using a lane rope, with participants agreeing to follow up on video content. Glenn demonstrated a HTML-based swimming simulation game he developed, which Monty suggested could be expanded to include various swimming concepts. The conversation ended with Doug expressing gratitude for the sport's advancements, particularly Glenn's contributions to swimming technology.


March 10, 2026 - Win the First Yard

*"Faster hand speed only helps up to the point where the water can resist it. Beyond that, you're spinning your wheels — the hand slides through the water rather than holding it. Elite swimmers don't pull harder, they pull ****smarter**** — accelerating the hand through the catch and mid-pull where the angle of attack is optimal, then finishing before the hand outruns the water's ability to push back."*

Are we really still thinking about distance per stroke?  You betcha!  Join us on Zoom as we continue to explore the relationship between stroke rate (tempo) and distance per cycle.

 

**Monday**

**Freestyle Drill: Building a Longer Stroke**

Glenn demos how to get your swimmers to *gradually* adopt a longer stroke, using the FINIS Tempo Trainer.

<https://www.goswim.tv/lessons/1710-freestyle-building-a-longer-stroke>

 

**Tuesday**

**Masters Tempo Trainer Workout**

Glenn describes how to use a Tempo Trainer to help a triathlete home in on their best, sustainable stroke rate.

<https://www.goswim.tv/lessons/1694-masters-tempo-trainer-workout>

 

**Wednesday**

**Breaststroke Drill: Playing with Rate**

An Endless Pool offers interesting ways to explore the relation between stroke rate and distance per cycle.  The swimmer in the video is learning to go the same speed with the least amount of energy.

<https://www.goswim.tv/lessons/1535-breaststroke-playing-with-rate>

 

**Thursday**

**Discovering Freestyle Efficiency Step 2**

Glenn demos a short set that helps swimmers understand how to increase speed while maintaining stroke count (distance per cycle).

<https://www.goswim.tv/lessons/1008-freestyle-discovering-efficiency-step-2>

 

**Friday**

**FINIS Smart Goggles Stroke Rate Feature**

Glenn helps a high-level triathlete explore stroke RATE in the Endless Pool using FINIS Smart Goggles. 

<https://www.goswim.tv/lessons/3313-finis-smart-goggles-stroke-rate-feature>

 

**Saturday**

**Freestyle Drill:  Reduced-Stroke 100s**

Understanding your stroke rate/length, how much effort you’re putting into every stroke, and a complete knowledge of what you’re doing in the water will serve you well as you try to compete at higher levels.

<https://www.goswim.tv/lessons/1881-freestyle-reduced-stroke-100s>

 

**Sunday**

**Brendan Hansen: Lane-Line Rhythm**

Check out Brendan Hansen swimming cross-pool breaststroke.  Then imagine what you could learn about your stroke by doing this with a Tempo Trainer at various rates.  You will automatically maintain distance per cycle, while increasing (or decreasing) your tempo.

<https://www.goswim.tv/lessons/265-lane-line-rhythm>

**AI in Sports Performance Analysis**

Glenn discussed the current situation in Iran, expressing concern for friends affected by the conflict and noting the potential for internet disruptions. He then shifted the focus to the role of AI in sports, emphasizing the importance of engagement and learning over mere data presentation, particularly for young athletes. Glenn shared a personal swimming experiment involving different stroke counts to analyze the impact on performance, capturing data to better understand the results. He highlighted the challenges of capturing accurate data in real-world scenarios and the need for purposeful teaching opportunities in sports.

**Swimming Efficiency and Speed Analysis**

Glenn presented data analysis from a swimming session, demonstrating how he achieved a 9-second improvement in his 100-yard time while maintaining consistent stroke cycles and distance per cycle. He identified that the key factor in his faster performance was increased hand speed, which allowed him to maintain higher tempo and better underwater velocity despite similar breakout distances. Glenn emphasized that swimmers should focus on explosive power off the walls and maintaining consistent speed throughout the race, rather than relying solely on acceleration.

**Optimal Hand Speed in Swimming**

Glenn discussed the importance of hand speed and body alignment in swimming, explaining that optimal hand speed is 2.1-2.5 times the swimmer's forward speed. He emphasized the need for a balanced approach, avoiding both too slow movements (which generate no power) and too fast movements (which can cause cavitation and slipping). Glenn also referenced a recent discussion about how swim velocity increases with tempo rather than stroke length, aligning with his own findings about the importance of hand acceleration through the catch phase.

**Swimming Performance Optimization Techniques**

Glenn discussed swimming techniques and data analysis, explaining how swimmers can improve their performance by focusing on push-offs, turns, and underwaters rather than just distance per cycle. He demonstrated improvements in his own swimming times from 122 to 111 seconds while maintaining the same stroke count, attributing the faster tempo to better force recruitment and explosive power. Glenn also briefly mentioned new features of the Tempo Trainer, a swimming tool he was testing, though he couldn't provide specific details about upcoming product releases.

**Swimming Technique and Push-Off Optimization**

Glenn and Monty discussed the optimal point to begin swimming after a push-off, emphasizing the importance of individualized coaching and counting exercises to teach proper technique. Glenn explained that swimmers should aim to start the push-off just before slowing down and highlighted the significance of underwater velocity and turn finish times in improving overall performance. He advised maintaining high speed through the turn and push-off, even when planning to slow down later in the race, as gliding does not incur energy costs.

**Swimming Performance and Traction Insights**

Mark shared insights from Ian Crocker about how swimmers can sense their performance in the first few strokes of a race, emphasizing the importance of maintaining traction and tempo. Aleks discussed the relationship between underwater kicking, hand speed, and overall swimming velocity, highlighting how elite swimmers use faster underwater kicking to maintain traction and increase hand speed. The group agreed on the significance of data collection and testing to understand individual performance peaks and optimize swimming techniques.

**Swimming Techniques and Performance Analysis**

Glenn demonstrated the importance of understanding and experimenting with swimming techniques, emphasizing the unique nature of each push-off and the need to focus on velocity and maintaining a straight line after starting. He showed a comparison between his 50-meter swim and Rachel's swimmers' 100-meter performance, highlighting the differences in data and the challenges of comparing individual results to Olympian-level performance. The group discussed the significance of basic swimming techniques and the need for consistent practice, with Barbara suggesting a focus on push-offs and breakouts in the next session.


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