BUILD. SUSTAIN. EXPAND.

BUILD. SUSTAIN. EXPAND.

How Your Body Creates Energy—and How to Train It Walking up a flight of stairs, carrying groceries, hiking, riding a bike, playing pickleball and completing a hard interval all require the same immediate energy currency: adenosine triphosphate, or ATP. Your muscles...
How Long Does Physical Change Actually Take?

How Long Does Physical Change Actually Take?

Many people stop training before their bodies have had enough time to produce the change they expected. After three or four weeks, they may feel that the program is not working. In reality, the nervous system may still be learning the movements, the cardiovascular...