Q&A #46 - Rest interval duration and body composition benchmarks for elite and age-group triathletes Should rest intervals be a fixed time or based on getting heart rate down to a certain level?  What are good target durations for rest intervals or good work:rest ratios for various types of workouts? What is the body composition of elite triathletes like, and should age-groupers also use that as a benchmark?    LINKS AND RESOURCES:   That Triathlon Show website  Coaching Training Plans Reference Values for Body Composition and Anthropometric Measurements in Athletes Chris McCormack On The Triathlete Weight Debate Lionel Sanders - What I Eat in a Day Upper Body Skinfold Thickness is Related to Race Performance in Male Ironman Triathletes     SPONSORS: ROKA - The finest triathlon wetsuits, apparel, equipment, and performance eyewear on the planet. Trusted by Javier Gómez, Gwen Jorgensen, Flora Duffy, Mario Mola, Lucy Charles and others. Get 20% off your entire order with the discount code TTS.   Precision Hydration - One-size doesn't fit all when it comes to hydration. Take Precision Hydration's FREE sweat test and learn how you should hydrate. Use the discount code THATTRIATHLONSHOW and get your first box for free OR use the code THATTRIATHLONSHOW20 to get 20% off your entire order.   RATE AND REVIEW: If you enjoy the show, please help me out by subscribing, rating and reviewing.    CONTACT: Want to send feedback, questions or just chat? Email me at mikael@scientifictriathlon.com or connect on Instagram, Facebook, or Twitter.