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By S. F. Heron
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The lower abdominal muscles perform the important function of helping protect the spine from injury. Preparing these muscles before and after exercises helps you get the most out of your workout. Stretching also has an added benefit in causing your muscles to continue working well after your warm-up, workout and cool down are complete. As with any stretching activity, proper posture is the key to correct warming up a muscle group. Keep your head straight with eyes ahead, shoulders relaxed and your back straight.