Targets: Hamstrings and glutes
(a) Lie face-up on the floor with your lower legs on a stability ball.
(b) Pulling your heels toward you and rolling the ball as close as possible to your bum, push your hips up until your body forms a straight line from shoulders to knees. Pause, then roll the ball back until your body is in a straight line again then lower your hips back to the floor you're not done yet – that's just one rep.
