- Place the towels under your toes in a plank position, with your feet slightly apart.
- Engage your core to lift your hips up and slide your toes toward your shoulders.
- Slide your feet back to plank position. This completes one rep.
- Try to do them slowly; Think three to four counts in and three to four counts out.
- Modification: this can be done on your elbows!
- Complete 12 to 15 reps.