Zero in on your upper half with this strength session, which also gets the legs involved.

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Get your body moving with fitness trainer Khetanya Henderson, who will be leading this 10-minute arms workout joined by class members Tiff Marie and Paulyn Baens. In this routine, you'll start with a ...

Start your week off right with Leslie's Arm Workout! Engage your triceps, biceps and shoulders with this easy-to-follow workout plan and get an inside look at what Leslie does to stay in shape. When ...

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. We’re going to start ...