Fire up your lower abs with this go-to bodyweight core exercise. Try to lift your upper back off the floor so your hands touch your feet.
- Lie on your back, and 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 mat.
- Repeat the crunch motion to complete one rep and aim to 10 to 15 reps.