Perhaps the most widely known and used core exercise, the ab crunch should be in every runners' strength training armoury. It works the rectus abdominis, the pairs of long, flat muscles at the front ...
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How Often Should You Work Out Your Abs?
“People have the idea that if they do an hour of ab exercises that that’s going to chisel their abs and burn fat from that area — the old spot-reduction approach,” says Wayne Westcott, Ph.D., a ...
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