Understanding Endurance through the Lens of Muscle Fiber

Understanding Endurance through the Lens of Muscle Fiber

In this post we provide a baseline level of understanding of the physiology that allows–or limits–the ability to go far and fast. This is an essential building block toward understanding how a runner’s endurance and speed relate. And if your aim is to get across the finish line as quickly as possible, you need to develop not just the endurance to cover the distance, but the ability to cover it at your goal pace. We present here a modern understanding of the physiology of endurance and speed–one in which we can train them as two sides of the same coin.