Upper Body: One-Legged Push-Up
- Start on your hands and knees.
- Extend your left leg behind you so it's parallel with the floor. Engage your abs.
- With your leg extended, bend your elbows lowering your torso toward the floor while keeping your left heel in line with your left hip. Straighten your elbows to push yourself away from the floor.
- Repeat for a total of 15 push-ups; then lift your right leg for another 15 reps.