- Lying on your back, lift your legs and arms up so they are extended toward the ceiling. Lift your upper back off the floor, reaching your hands toward your feet.
- Lower your legs toward the floor while reaching your arms overhead, keeping your shoulders off the mat and lower back pressed into the ground.
- Repeat the crunch motion to complete one rep.
- Do as many reps as you can in 30 seconds. Rest for 30 seconds.