The Dumbbell Skull Crusher 101 | How to Build Bigger Triceps!
May 04, 2020· Dumbbell skull crushers, also known as the lying triceps extension, is an effective exercise for anyone attempting to build triceps strength and size. The tricep is one of the most important muscles involved in upper body conditioning. If you want to improve your upper body strength, size, and aesthetics, dumbbell skull crushers are for you!