Single-Legged Bench Sit
Set Up: Stand a few inches in front of a flat bench. Raise one leg straight from the floor as shown and extend your arms in front of you for balance.
Action: Bend your leg to sink into a squat. Beginners can slowly lower until they are seated on teh bench, while advanced exercisers should stop a few inches above it. Press through the ball of your foot to stand. Finish your set, then repeat on your other leg.
-Oxygen Magazine