One Leg Wall Sit

Lean with your back against a wall and squat down until your thighs are parallel with the ground. Your back should be flat against the wall and your knees above your ankles. Keep your shoulders down, chest up and your abs tight.

Lift one leg up and extend it in front of you with your feet flexed. Keep your hips in one line. Your abs remain tight.

Begin a small movement with your extended leg up and down. Each little pulse counts as one rep.