Why? You either hate urpees or just tolerate hem, but they sure are super-effective donywhere exercise. How? Squat and place your ands just in front of your eet. Step backwards so your body forms a strong prone position. Drop your body, resting your torso and pelvis on the ground. Push back up to your feet (pictured), then jump your feet back to your hands. Stand, do a small jump and go into your next rep.