Bodybuilders LOVE to flex their biceps, and even recreational exercisers like to show off their biceps from time to time. But, while the biceps are undeniably the glamour muscle of bodybuilding and fitness, the triceps are every bit as important. The triceps actually make up a more significant percentage of your upper arm mass. As such, if you want arms you can truly be proud of, you need to dedicate at least as much time to triceps training as you do working your biceps.
Fully developed triceps add size and shape to your upper arms. The impressive horseshoe shape of the muscle looks great in a t-shirt and counterbalances a flexed biceps. One of the most popular triceps exercises is the skull crusher, also known as the lying triceps extension . In this article, we go over the unilateral version of the conventional exercise — the single-arm skull crusher . You’ll learn how to do the single-arm skull crusher with the perfect form, the benefits, and the variations and alternatives of the exercise.