Читать книгу Peak Nutrition - Maria Hines - Страница 63

During training—or any period of activity and exertion for an athlete—macronutrients are what fuel the energy systems. Let’s take a closer look at some of the functions and best practices for optimally supporting each system.

Mitochondria have many roles in the body. A mitochondrion is an organelle that is the powerhouse of a cell. It acts like a digestive system, breaking down nutrients and producing a ton of energy in the form of ATP. Mitochondria are found in all cells. Muscles have a lot of them because of the energy demand during exercise. Endurance athletes have and need more of these than power athletes.