By eHow Sports & Fitness Editor
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The duck walk, like the crab walk, the squat and the forward and reverse lunge, concentrates on the thighs and backside in calisthenics exercise. These are large muscles, so the harder you work them the faster you will see results from your calisthenics program. You will also look better, especially in shorts. Here are steps for the duck walk exercise.
eHow Sports & Fitness Editor