Reps: 30 seconds, each side
- Begin in a side elbow plank with your left elbow down and your right hand behind your head.
- Keeping your torso stable and your waist lifted, bring your right leg up toward your shoulder to lightly tap your right elbow.
- Lengthen your right leg back to the starting position to complete one rep.
- Repeat for 30 seconds, then flip so your right elbow is on your mat and repeat on your left side for 30 seconds.