Do it: With your feet shoulder-width apart, lift a barbell off the rig, centering it evenly across your shoulders. (This version of the squat targets the core, not the legs, and so you should be using far less weight than you would for a traditional back squat.) Send your glutes back like you’re lowering into a chair, bending at the knees as deeply as possible. Press through your heels to return to the starting position for one rep. Do 12 reps for one set.
Build a strong back and sculpt a rock-solid middle in one shot with the archer row. This ab exercise combines a staggered side plank with a dumbbell row. "As the load moves up and down, your body has to fight to resist rotation," says Gaddour. That means your entire core—lower-back muscles, obliques, rectus abdominis (also known as your six-pack muscles)—is working overtime to keep your spine stable.
The Torso Track comes out as number 5 for effective ab exercises, but this is one of my least favorite exercises because it can cause lower-back pain, particularly if you roll out too far. In fact, in the ACE study, researchers found that a significant number of subjects reported lower-back pain, so you may want to skip the expense, and discomfort, of this one and choose other exercises that can target the abs with equal effectiveness.
“A silly thing I do on a daily basis is focus on sitting or standing tall with good posture and then ‘sucking it in,’ for lack of a better term. Basically, I tighten my core and hold onto it for as long as I can, and I keep doing that throughout the day. It’s a great way to not feel like a lump while sitting in front of a computer for a long period of time, and it’s like a bonus workout for my abs.” —Dorothy Beal, @mileposts
To do it: Start in a plank position with one small towel placed under each ball of your foot, legs together. Bring your left knee in towards the right side of your chest, squeezing your abs. Then, straighten your right leg back out to full plank and bring your right knee in towards the left side of the your chest and back out to full plank. Next, draw both knees into your chest at the same time and then slide your legs back out to full plank. That’s one rep. Build up to 3 sets of 12-15 reps (resting in between).
Refresh your abs workout with these 25 core exercises. They'll challenge your abs from all angles, making you stronger in everything you do and giving you a body you'll be proud to show off shirtless. And for a complete fitness program that will not only build your abs muscles, but also melt the fat that covers them, try Anarchy Abs from Men's Health. You’ll get five 30-minute calorie-torching workouts that employ a unique blend of metabolic training, traditional strength training, and gymnastics fundamentals to strip away fat from head to toe.