We have nothing against planks (really, we don't), but sometimes they're just not the move you want. Maybe your arms are sore from a tough upper-body workout, maybe you're nursing a shoulder injury, maybe you just don't feel like getting on the floor and shaking for a minute straight right now. We feel ya, and we're here to help. You can work your abs to a burn even without this classic move, and the 19 moves ahead are proof! Roll out a mat and get ready to ignite your abs from every angle (besides, you know, a plank).
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