B BIGBANGSingh New member Jul 23, 2003 #1 When you normally perform sit-ups, do you keep your legs bent or straight, and why? Also, is there any difference in the muscle groups worked, or is it just the abs and hip flexors?
When you normally perform sit-ups, do you keep your legs bent or straight, and why? Also, is there any difference in the muscle groups worked, or is it just the abs and hip flexors?
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