5 DUMBBELL ARM WORKOUTS FOR BIGGER ARMS

In general, if you want to build muscle, you need to train with heavy weights. But that’s not always true, especially when training your arms.

The key muscle groups that make up your arm (biceps, triceps, and the brachialis, a muscle that lies under your biceps) aren’t as massive as your pecs or lats. And that means they can be challenged by much lighter loads.