Q&A #85 - Backyard pool training; Ammonia smell after workouts; Can Max Heart Rate be trained?    If you have access to a small backyard pool and a tether, how much is a reasonable amount to train in it?  What is the reason for smelling ammonia after long workouts and what to do about it.  Can you increase maximum heart rate with training? Possible reasons for seeing a very low maximum heart rate.   LINKS AND RESOURCES: That Triathlon Show website  Q&A Episode Archives  Coaching Training Plans Scientific Triathlon Training Zones calculator   SPONSORS: 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 THATTRIATHLONSHOW15 to get 15% off your order OR use the code THATTRIATHLONSHOW and get your first box for free.   ROKA - The finest triathlon wetsuits, apparel, equipment, and eyewear on the planet. Trusted by Javier Gómez, Gwen Jorgensen, Flora Duffy, Mario Mola, Lucy Charles and others. Visit roka.com/tts for 20% off your 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.