what is a skull crusher
Make sure to keep your elbows in and completely fixed while you lower the barbell down and up. From the bottom position, raise the barbell back up to the top position and repeat. Why This Exercise is Important: Skull crushers are one of the most widely used and effective isolation exercise there is for your triceps. All pressing motions involve the triceps to some degree. Only skull crushers and other triceps isolation exercises work the muscle group through its full range of motion.