Targets: Abs, obliques, butt, and legs
- Lie faceup on floor with legs extended, feet together, a single towel under both heels, and arms out to sides at shoulder level, palms down.
- Keeping abs contracted, upper body still and legs together, slide feet as far left as possible.
- Slide feet back through center and as far right as possible to complete 1 rep.
- Do 12 reps.