By
eHow Sports & Fitness Editor
Difficulty: Moderately Easy
Step1
Find a partner to help you. It doesn't require a lot of physical exertion for the partner's role, so anyone who is able to stand and has some upper body strength will do.
Step2
Lie with your back on the floor, placing your head between your partner's feet.
Step3
Reach back and hold your partners ankles or calves securely with your hands. This provides leverage and stability while you're doing the exercise.
Step4
Bend your knees slightly and slowly raise your legs towards your partner's body. Press your upper back into the floor and feel each vertebrae of your spine roll off the ground. Bring your legs all the way up so your partner is holding onto your ankles.
Step5
Feel your partner throw your legs away and down. Your partner should not just push, but rather throw them so your legs have both momentum and gravity pulling them down to the floor.
Step6
Resist the force of your legs as they are thrown and don't let your feet touch the ground. Slowly bring your legs back up to your partner and allow him to grab your ankles again.
Step7
Ask your partner to throw your legs in different directions. Throwing them to the side at least 45 degrees works the oblique muscles and random throws helps with strengthening the abs and your coordination.