Get ready for the ultimate pump.

"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 ...

Improve your upper body workout with 10 overlooked exercises that build more strength, size, and balanced muscle.

A new study suggests lighter weights may build muscle just as effectively—if you train the right way.

Dumbbell exercises for men over 55 to build muscle fast, a CSCS shares a simple 20-minute morning routine.

For people who don't enjoy the gym—or want to avoid expensive membership fees—there are plenty of other ways to build strength, including Pilates, dumbbells, or local parks with fitness equipment.

Your workouts might change, but your fitness doesn't have to suffer ...