If one of your fitness goals is to build stronger and bigger arms, you need to be doing biceps and triceps exercise regularly. These are the main muscle groups in the upper arms, and tend to benefit most from isolation exercises that target them directly.
The most common of these that you’ll see in the gym is biceps curls, but that’s not one of the four moves recommended by personal trainer Jeremy Ethier as part of his ultimate four-move arms workout, which you can see on his YouTube channel.
