Kayla Itsines is an Instagram fitness star whose Bikini Body Guide workout program has helped many women transform their bodies. We asked Itsines what some of her go-to moves are for toning arms and ...

Not only does swinging your arms at a faster rate help you walk faster—and ignite serious calorie burn—but that movement also engages the upper body, lower body, and, of course, your abs. “The ...

The path to a toned, strong core isn't doing endless crunches, which only target a few of your many ab muscles. Rather, it’s best to combine a lean, healthy diet with a variety of abdominal moves that ...

Looking to get a killer core and strong, toned arms? Forget wasting hours at the gym — this double duty move is the only workout you need to tone both your upper body and your abs at once, and you can ...

Add Yahoo as a preferred source to see more of our stories on Google. The Little Fires Everywhere star shared a bit about her history with the exercise modality in her Instagram caption. "Turning ...

When it comes to toning the midsection, few are as knowledgeable as Chris Guerrero, founder and president of CrossFit Westchester and a former CrossFit regionals athlete. Here are four of the fitness ...

No laying on the floor required.

Tone House head coach Christi Marraccini demonstrates must-try tips. The plank is a simple exercise that can be done anywhere at anytime, but its benefits are countless. Planks can not only help ...

Looking for the best exericses to tone up both your arms and abs? Take this intense arm and ab session to the gym. Created by fitness and lifestyle blogger, Tash Oakley's PT, Gilles Souteyrand, it ...