Roll-ups work the entire abdominal wall, but adding the leg lift focuses the work on your lower abs.
- Start lying on your back with your arms reaching toward the ceiling.
- Exhale and roll up toward sitting while lifting your left leg up. Pause at the top and reach for your toes before rolling slowly back down to the mat as you lower your leg. Then perform on the other side to complete one rep.
- Complete as many reps as you can with good form for one minute.