Leg extensions ( donkey kicks )

Muscles worked

You need

How to do it

1. Start on all fours with your hands under your shoulders and your knees under your hips.
2. Keeping one knee bent at a right angle, drive that leg up behind you, pushing the sole of your foot toward the ceiling until your thigh is in line with your back - like a donkey kicking, which is exactly where the move gets its other name.
3. Lower the knee back down without resting it on the floor and repeat.
4. Keep your hips square and your back flat, complete your reps, then switch legs.