This exercise focuses on working the abdominals and obliques. It is also great before any kind of physical activity, especially involving running.
Start by lying on your back on a mat, with your legs bent to 90 degrees in table top position. Your elbows should be out and your hands resting behind your ears.
Bring in your right knee, slightly past 90 degrees. Your left leg should be straight out and hovering off the ground. At the same time bring in your left elbow to touch your right knee.
In one motion, have your legs and elbows switch. Keep switching slowly back and forth as if riding a bicycle. Complete both sides for one rep.
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