"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." TO MAKE THE arm muscle gains you want, you'll need to be intentional. Following a balanced workout split ...

A certified trainer shares an 8-minute routine targeting arm flab after 55 — no weights needed to tighten and firm bat wings fast.

Trainer Tyler Read’s 8-minute bed routine, Do it nightly to tighten arm flab after 60.

Building an effective workout routine isn’t just about showing up at the gym. One of the most important decisions you’ll make is how to split your training across the week. Trainers emphasize that ...

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A new study explains how a tiny enzyme switch helps muscles make energy during exercise and may even connect to diabetes risk.

Arm fat can be particularly frustrating. It’s often one of the last areas to respond to diet and exercise, and the first place to show when we gain weight. Whether you’re concerned about upper arm ...

The Lying Triceps Extension helps to firm and strengthen the muscles on the back of the upper arm. Any movement that involves straightening the arm will involve the triceps, which consists of three ...

If you have ever wondered why your arms seem to hold on to fat even when you are eating well and exercising, you’re not alone. Many people find arm definition particularly tricky to achieve—but ...

TO MAKE THE arm muscle gains you want, you'll need to be intentional. Following a balanced workout split will put you in a good position for growth—but if you really want to maximize your biceps ...