In the First Few Seconds
Your muscles start using adenosine triphosphate (ATP), energy molecules your body makes from food.
That burst of power you feel? It’s ATP converting into another high-powered molecule, adenosine diphosphate (ADP). Muscle cells, expert recyclers, will turn ADP back into ATP after the initial surge.
Continue reading at Active.com.
Training Journal – 6/28/12:
- Current plan: Half-marathon program
- Today’s session: 7 mi easy @ 9:19
- Comments: I did 7.2 @ 8:41