When most people think of bigger arms, their mind immediately goes to biceps. But here’s the truth seasoned lifters understand: your triceps make up nearly two-thirds of your upper-arm size. If you ...

Building serious arm size takes more than pressing on repeat. To fill out a sleeve and add lockout strength, put the triceps extension in regular rotation. This classic elbow‑extension move is one of ...

The triceps muscle crosses two major joints in the body -- the elbow and the shoulder. It's a critical component of upper body biomechanics and is involved in almost every arm movement that exists.

Add Yahoo as a preferred source to see more of our stories on Google. Man doing tricep pushdowns. We have more triceps than biceps (they actually make up two thirds of your overall arm). So, if you’re ...