Fitness Contrarian

Your muscle fiber type mostly determines the type of athlete you are. If you are strong and fast but get tired quickly you probably have a greater percentage of fast–twitch (type II) muscle fibers. If you can run long distances without getting tired you most likely are made up of more slow-twitch (type I) muscle fibers. If you are equally good at both strength and long endurance type activities; however, then you might have an equal proportion of both type I and type II (50/50) muscle fibers (…)