crunches are better than sit ups for several reasons, one being the evil seam. Also crunches don't put strain on your neck. Much energy is waste...

crunches are better than sit ups for several reasons, one being the evil seam. Also crunches don’t put strain on your neck.

Much energy is wasted in the sit up. Crunches, when done properly, do a better job of working the abs.

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