4 min read PUMPING UP YOUR arms when you're short on equipment can feel like a tall task. There is one movement in your workout repertoire, however, that you can depend on to train your triceps to the max when you're outside the gym: the close-grip pushup. This bodyweight workout staple takes one of the most reliable gear-free upper body movements, the pushup, and tweaks the position shift the focus more squarely onto the triceps muscles. Even though this is a simple, basic movement, the close-grip pushup can be more difficult than you might expect—especially if you've learned a common technique that will put you in a compromised position. Let Men's Health fitness director Ebenezer Samuel, C.S.C.S. and senior fitness editor Brett Williams, NASM guide you through the exercise's subtleties, setting you up for real success.…