15 Simple Yet Effective Ab Exercises You Can Do at Home

This dynamic move puts yet another twist on the classic crunch. By extending your legs and arms, you'll feel even more of a burn.

• Start by 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 down slowly back to the mat.
• Repeat on the other side. That's one rep.