The first barbell curl was probably performed about three minutes after the barbell was invented and it’s been a gym staple ever since. This timeless exercise has always been reliable and effective for building a set of bulging biceps. Credit: Gorodenkoff / Shutterstock It might be seen as a very simple movement — grab the
arm size
Ask 10 lifters to name the body part they’re training on any random day, and you’ll probably hear some familiar answers — chest, back, arms, biceps, maybe even legs. But very few will say they’re working triceps. There’s generic “arm day,” which includes the triceps. But they rarely get a spotlight, and that’s a mistake.