"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, ...

If you have pain in your back or shoulder during exercise, changing the angle of a movement could help.Jordan Beal / EyeEm Common arm workouts with overhead movements can cause pain or injury, ...

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Add Yahoo as a preferred source to see more of our stories on Google. For some gym bros, every day is arm day. These guys spend ungodly amounts of time creating and tweaking (then re-creating and ...

One of the most important arm muscles is the triceps brachii (the triceps, for short). You use your triceps to extend your arm. It opposes the biceps muscle, which is used to flex the arm. You also ...