Workout For Abs and Butt
Fire Up Your Abs and Butt With This 30-Minute Circuit
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- Start in a traditional plank — shoulders over hands and weight in your toes.
- With your core engaged, bring your right knee forward under your chest, with the toes just off the ground. Return to your basic plank. Switch legs, bringing the left knee forward. That completes one rep.
- Do 15 reps.