This is How Your Body Builds Endurance & Burns Fat

Why do you get tired and can you actually train your body to keep going longer while burning more fat? This animated debate explores the science of endurance, VO₂ max, stamina, fat loss, aerobic fitness, metabolism, lactate, carbohydrates vs. fat, and the energy systems powering every workout.

Discover how your body produces energy, why exercise intensity changes the fuel you use, what really limits endurance, and how different types of training can transform your ability to perform.