Interval training A. Involves short periods of intense activity and is used to build strenght,speed,and power. B.can guarantee an athlete an injury-free season. C.involves long periods of low-intensi

Interval training A. Involves short periods of intense activity and is used to build strenght,speed,and power. B.can guarantee an athlete an injury-free season. C.involves long periods of low-intensity activity and builds stamina. D.will get you into shape in about five days.