“Sustained muscular action often is,” Dogger said. “Without prior training, that is. Such fatigue is due largely to a surplus of chloride, potassium, lactic acid, and magnesium, caused by muscular contraction, and a simultaneous insufficiency of creatine phosphate, glycogen, and adenosine triphosphate.” Why had no one ever put it so plainly? It suddenly made such perfect sense.
