When the season changes and the weather gets colder, all that hard work and dedication in the gym—a.k.a. your bulging muscles and six-pack abs—get hidden away in layers of outerwear. But have no fear: Even in the most bulky sweater, you can train your physique to look powerful.

That's why we created The Upper-Body Big Muscle Workout Program. It's designed to to pack on muscle and sculpt an upper body that no amount of clothing can conceal.

Think of this gallery as a reference guide to each move contained in The Upper-Body Big Muscle Workout Program. Scroll through to get the details on how to perform each move, then check out the simplified guide to every day of The Upper-Body Big Muscle Workout Plan.