If you're just as focused on your appearance as building strength and mass—and there's nothing wrong with that—there's no better place to start than your biceps. The muscles are composed of a long and short head, which team up to handle movements like flexing, and curling, that make your arms pop.The biceps take up a ton of prime real estate on the front of your arm, and they're probably the easiest part of your body to show off no matter the situation, or who you're trying to impress. ~ Berceste