Wall Sit

How to do it

1. Stand with your back flat against a wall and walk your feet out about two feet in front of you.

2. Slide down the wall until your knees are bent to 90 degrees and your thighs are parallel with the floor.

3. Keep your whole back in contact with the wall and your weight in your heels.

4. Hold. Time it rather than counting reps, and add ten seconds a week.