This is a great exercise for your lower back and glutes!
Lie on your back with your knees bent, placing your heels close to your butt. Keep your arms at your sides with palms down.
Squeeze your glutes and raise your hips off the floor to get into the bridge position – you’ll form a straight line from your shoulders to your knees.
Hold the bridge position for 2 seconds, then lower your hips almost to the floor. Repeat.