The secret to big arms? It relies on many factors: genetic makeup, workout frequency and more. These elements determine the time it takes to get big biceps.

You want to build up your physique—but there's a line between well-pumped and overdone. Here's what you need to know.

If you want bigger, rounder biceps, consider this your sign to add spider curls to your next arm day routine.

How to get bigger biceps? While there are many workouts designed to help grow these muscles, "the primary exercise to target the biceps is the arm curl," says Schoenfeld.