You'll need to understand more about the muscles and how you'll use them during each exercise variation to produce the results you're hoping for to build a pair of big, strong arms. There's nothing ...

Let’s be honest, we're all a fan of upper body day because everyone wants big arms. No, more specifically, big biceps. However, if you’ve been endlessly curling dumbbells and your t-shirt sleeves ...

NO ARM DAY WORKOUT is complete without a solid biceps pump. The big arm muscles are one of the most popular points of focus for mass-obsessed gym bros, and for good reason. The biceps take up a prime ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...