Side Jackknife

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Side Jackknife muscle diagram

Works your obliques. Lying on your right side and keeping your left leg over your right one, place your right hand in a comfortable spot and clasp your left hand behind your head.

Bring your torso and left leg toward each other as you pull with your obliques. Squeeze for a moment and return to the starting position. You can use ankle weights to make it tougher!

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