You might be surprised how much you're already hitting this valuable muscle group. Here's how to avoid going overboard.

Building serious arm size takes more than pressing on repeat. To fill out a sleeve and add lockout strength, put the triceps extension in regular rotation. This classic elbow‑extension move is one of ...

WHAT'S YOUR GO-TO arm day exercise? There's a good chance your answer is the dumbbell biceps curl. That's a great answer—we've talked at length about the move and how valuable it can be for your ...

The triceps muscle crosses two major joints in the body -- the elbow and the shoulder. It's a critical component of upper ...

In TODAY.com's Expert Tip of the Day, a trainer shares her favorite exercise for toning and tightening the arms.

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