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Workout Videos

You know that squats are the key to building stronger glutes—but there's more to squatting than meets the eye.

Blast fat and torch calories with this routine developed by Erin Bulvanoski of Kore New York.

Burpees: We love to hate 'em, but if you stick to this 30-day challenge, you'll feel stronger, tighter, and more toned by the end of the month

You might not want to go outside, but you can still keep your energy and heart rate up inside with this fast, fat-burning routine.

Trainer Robin Arzon from Peloton Cycle shows us four advanced ab exercises that turn up the intensity and go way beyond the basic crunch.

Sprinting to the recovery food? Not so fast. Why you should think twice about blowing off your next stretch sesh.

Rock these HIIT exercises with Amanda Butler, trainer at The Fhitting Room in New York City (a studio dedicated to HIIT), to get your heart racing in seconds.

Up for a full-on ab assualt? The final week of our 30-Day Ab Challenge is the most challenging set of ab exercises yet. Go big, then go home.

You're halfway through our 30-Day Ab Challenge. Week 3 is all about firing up those obliques. Grab a mat and get ready to really sculpt your abs where you can see 'em.

You made it through Week 1 of our 30-day ab challenge! Celebrate with this week's 3-minute core-crushing lower-ab blast.

Abs: We all want 'em, but no one wants to sit there holding a plank for minutes on end. We've got you. In Week 1 of our ab challenge, you won't do any exercise for more than 30 seconds. Even better?

Can't quite do a push-up yet? No prob. We have the push-up variations and modifications to help you work up to the real thing.

These five awesome variations will take your plank routine (and abs, butt, and arms!) to the next level.

Triceps dips are one of the best ways to tone your triceps, according to research from the American Council on Exercise. Even better, you need little to no equipment to reap the rewards.

Research from the University of Wisconsin–La Crosse shows that the crunch activates the rectus abdominis and external obliques better than any other common core exercise.

If you've never been much of a lunge lover, now's the time to switch camps. Lunges train your glutes, hamstrings, quads, and core.

The deadlift is one of the best lower-body exercises around, but it's also easy to do incorrectly. Let's learn how to deadlift—variations included—for a lean lower body you'll love.