The New Rules Of Endurance

Part 2

Energy Systems: 3 “Vehicles”

It all comes down to a thing called ATP. ATP is adenosine triphosphate, which means that the purine nucleoside adenosine is bonded with 3 (tri) phosphate groups. To produce energy in the muscles, the molecule is broken, leaving adenosine diphosphate (or ADP) and a free phosphate. The free phosphates are then “gathered up” by …