If you want bigger, stronger arms, focusing only on biceps won’t get you there. The triceps make up the majority of your upper-arm mass, and building them effectively requires targeted isolation work.

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 ...

WHEN IT COMES to training your lower back, it doesn’t get more straightforward than back extensions. This old school classic is a bit more nuanced than you might think, however—and that makes ...