Scott Johnston is an endurance sports coach, author, and co-founder of the coaching business Uphill Athlete. The main focus of Scott and his company is coaching mountain sport athletes, like mountain runners, climbers, and ski mountaineers, but Scott also has an extensive background in more traditional endurance sports like swimming, cross-country skiing, and even triathlon.   IN THIS EPISODE YOU'LL LEARN ABOUT: -What do we mean by "aerobic base", and how do you develop a really strong aerobic base?  -How should aerobic training be executed?  -How and when should you balance high-intensity training into your training program?  -Training zones: Scott's recommendations for how to assess and use training zones -Testing: the Heart Rate Drift test for assessing your aerobic threshold SHOWNOTES: https://scientifictriathlon.com/tts326/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  ROKA - Exceptional quality triathlon wetsuits, trisuits, swimskins, goggles, performance sunglasses as well as prescription eyeglasses and sunglasses.  Online vision test for prescription updates and home try-on options available for eyeglasses. Ships from the US, UK and EU. Trusted by world-leading athletes such as  Lucy Charles-Barclay, Javier Gómez Noya, Flora Duffy, Morgan Pearson, Summer Rappaport and others in triathlon, cycling, speed skating, and many more. Visit roka.com/tts for 20% off your order. LINKS AND RESOURCES: Uphill Athlete (Scott's coaching business) website, Youtube, and Instagram Training for the New Alpinism and Training for the Uphill Athlete - Scott's books Related articles on Uphill Athlete: Heart Rate Drift test instructions, How to set your training zones, and Training zones heart rate calculator Polarised training with Stephen Seiler, PhD | EP#177 Training structure, periodisation and the science of winning with Jan Olbrecht, PhD | EP#198 The Science of Winning: Planning, Periodizing and Optimizing Swim Training (Kindle Edition) by Jan Olbrecht Special Strength Training: Manual For Coaches & Block Training System in Endurance Running by prof. Yuri Verkoshansky RATE AND REVIEW: If you enjoy the show, please help me out by subscribing, rating and reviewing: www.scientifictriathlon.com/rate/ CONTACT: Want to send feedback, questions or just chat? Email me at mikael@scientifictriathlon.com or connect on Instagram, Facebook, or Twitter.