If your arm day training session is stuck in the same old slog of biceps curls to triceps pressdowns—then wash, rinse, repeat—it's far past time that you introduce some variety into your workout. Take ...

The secret to an upper body that looks fierce AF: cut triceps. This part of the arm often gets lost in the workout shuffle-while moves like <a href="https://www ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." ON THE BACKSIDE of each of your upper arms is an unsung hero. With the right amount of consistent, ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Arm day can be one of ...

A CPT shares 4 morning moves that target arm jiggle after 55 using slow, controlled tension, no weights needed.