Jillian Michaels, guides you through six fun interval training units to help you melt away the pounds, for a tighter tush, leaner legs, and buffer back.Jillian Michaels, guides you through six fun interval training units to help you melt away the pounds, for a tighter tush, leaner legs, and buffer back.Jillian Michaels, guides you through six fun interval training units to help you melt away the pounds, for a tighter tush, leaner legs, and buffer back.