Bicycle Crunches

How to do it

1. Lie on your back with your hands lightly behind your head and your legs lifted, knees bent over your hips.
2. Curl your shoulders off the floor and bring one elbow toward the opposite knee.
3. Extend the other leg out long without letting it touch the floor.
4. Switch sides in a smooth pedaling motion, rotating through your torso.
5. Keep the movement slow and controlled rather than rushing the reps.