Add Yahoo as a preferred source to see more of our stories on Google. Credit: Shutterstock You may have heard the gym rats in your life talk about chest day. Strengthening your chest is incredibly ...

What it does: The dumbbell bench press is a compound exercise that builds strength and size in your pectoral (chest) muscles.

You probably work your biceps and triceps on arm day, but are you remembering your forearms, too? The muscles in your forearms are responsible for a strong grip, as well as balancing out those other ...