Trainers share five proven moves to firm triceps and shoulders. Build definition and reduce arm jiggle with clear tips.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Fitness entrepreneurs (and mother-daughter duo!) Denise and Katie Austin are here to help guide proper ...

Go to any group fitness class and you can expect at least some of the moves to be centered around toning the core. Other parts of the body where fat can accumulate get a little less attention, however ...

You don’t need a pricey gym membership or a set of weights to start building upper-body strength—just your own body. Whether you're tight on time, space, or equipment, bodyweight arm exercises offer a ...

Arms: they’re good for more than triumphant finish-line photos! Those non-leg appendages, which runners tend to ignore when it comes to strength training, can actually help you cross that line faster ...

This TRX upper body workout will benefit your running, but that’s not the only (or even the most important) reason to do it. “Having a strong upper half is integral to simply functioning well,” ...