Start on your back with your elbows resting on the floor at a 90-degree angle. With your core engaged, roll up to almost sitting while bringing your right knee up to meet your left elbow. It should feel a little like running. With control, straighten your leg as your slowly peel your back down, vertebra by vertebra, until your shoulders touch the mat last. Alternate with your other leg to complete one rep.
The Only Move You Need to Tone Your Entire Body - Short on time? Don't skip the strength-training session — get playful with the plank! By doing multitasking variations of this basic move, you can target your arms, back, core, legs, and booty to chisel out a stronger, more toned you.