Who wouldn't love to tighten and tone their tummy? But it's not always obvious which moves will really do the trick. So we asked a pro--Jessica Matthews, MS, an exercise physiologist with the American Council on Exercise--for her expert opinion.

News & Views
October 03, 2013

Who wouldn't love to tighten and tone their tummy? But it's not always obvious which moves will really do the trick. So we asked a pro--Jessica Matthews, MS, an exercise physiologist with the American Council on Exercise--for her expert opinion.

ANSWER Both—but the first is a more efficient option. “Plank activates more muscles,” says Matthews, “and it’s gentler on the spine.”

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