Lay down on the floor and place your left foot on your right knee with your hands behind your head.
STEP 2
Lift your shoulders off the ground and twist until your right elbow touches, or almost touches, your left knee.
STEP 3
Return to the start position and repeat for desired number of repetitions.
STEP 4
Rest a few seconds and repeat movement on other side.
Special Notes
Ideally, you should touch your knee with your elbow when you do this exercise. If you can't, try to get as close as your can to touching the knee. Also, don't jerk yourself up and use that momentum to lift up. You should be contracting your abdominals and obliques to lift your hips and upper body off the floor.