Mountain Climber Sliders
- With the towels under your feet, start in a basic, straight-arm plank position.
- Then, as if you were actually running, pull one knee toward your chest, dragging your foot on your "slider" along the floor.
- As you push that leg back, pull the other knee forward to complete the rep.
- Keep "running" in place for 24 reps or 30 seconds.