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HERE IS WHERE SOME OF YOU MAY NOD

Now it’s time to get down to the body’s energy currency—adenosine triphosphate (ATP)—and the energy systems responsible for fueling your favorite mountain sports. If you understand how fuel provides energy for your body, you will have an easier time figuring out your own peak nutrition plan and when to eat carbohydrates, proteins, and fats. This chapter explains energy transfer, micronutrients and macronutrients, insulin and blood sugar levels, and the science behind hydration.

To achieve peak nutrition, mountain athletes need to fuel their bodies with the appropriate amount of nutrients to create enough ATP, the body’s energy currency. This essential molecule carries the energy for every baseline process in the body, including the continuous muscle contractions that take place on those long slogs up to the summit. You need a constant stream of ATP to keep you moving and to keep pushing you toward your objectives. The more ATP you have, the more you can do. The kind of outdoor sports you do will determine how you spend the currency.