Shawn Bearden is a professor of exercise physiology at Idaho State University where he focuses on ultra endurance performance. He has published research in the American Journal of Physiology and the Journal of Applied Physiology, and he’s previously studied at Yale, UVA, and George Mason. Shawn hosts a podcast of his own called the Science of Ultra, where he interviews the smartest scientists in the world about the physiology of ultra endurance. If you want to understand the intricate details of how our bodies are able to perform at extremes, this episode is for you. Shawn studies and lectures on the physiology, all while putting himself through the rigor of ultra running. In this conversation, we talk specifically about running ultramarathons and what that does to your body. You’ll hear what occurs in the body during a 100-mile race that doesn’t happen during a marathon, optimal fueling strategies for ultra-endurance, the most prevalent myth surrounding ultras, and a lot more. Show Links & Resources: Connect on Twitter Find more of Shawn's content on his website Science of Ultra podcast Learn more in my guide to ultra running Thank You Gatorade Endurance! This episode is made possible by support from Gatorade Endurance. Use code Strength20 for 20% off at GatoradeEndurance.com. Reformulated in 2017 to be even more effective, Gatorade Endurance Formula is a specialized sports drink. That means it has higher amounts of sodium and potassium to help sustain hydration, maintain proper fluid balance, and replace key electrolytes that you lose when you’re running. Plus, it has no artificial sweeteners or flavors and has a lighter flavor designed for athletes training longer. I know the last thing I want when I’m two hours into a long run is a strong flavor that might turn my stomach. Gatorade Endurance Formula also now offers a multi-carbohydrate blend to help you dial it in and maintain performance over much longer runs. Different carbs are utilized at different rates, so this advancement helps you both run longer and lower any risk of stomach distress because it won’t be working so hard all at once. You can check out all of their flavors, including caffeinated and non-caffeinated options, at GatoradeEndurance.com and don’t forget to use code Strength20 for your 20% discount.