The standing abs workout

It's true: Standing moves engage more muscles.  Challenge your core with a fast belly-tightening routine you can do on your feet.

When you want to sculpt lean, sexy abs, doing crunches is highly overrated. Why? On-your-back moves target just one part of your midsection and leave out the deep-lying muscles that cinch in your waist. This upright abdominal workout, created by Bernardo Coppola, a celebrity personal trainer in L.A., engages all the muscles you need for a bikini-worthy middle--minus the neck strain.

What to expect: You'll be strengthening your entire core, the dozens of muscles that make up your hips, pelvis, lower back, and abs. And this will improve your posture and ensure you perform everyday tasks, such as lugging heavy grocery bags or running to catch a bus, more efficiently. Complete three or four sets of each exercise as instructed, resting for 30 seconds between sets, two or three times a week.

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