Adding resistance to a bicycle crunch is a welcome challenge not just to your abs but also to your coordination and offers a bonus arm workout. Sitting up on your bum in a v sit, pull one knee towards your chest and pass the ball across your body under your leg. Repeat on the other leg, flowing continuously with your upper body leaning back slightly. If you feel like your unable to keep your body stable you can ground the heel of the extended leg.
Bicycle Crunch Ball Pass
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