Skull crushers: Want bigger

Want bigger, stronger triceps? Find out how to do skull crushers safely, the muscles worked, pro tips, common mistakes, and the best exercise variations. Skull crushers are a tricep-focused upper body push exercise that works all three heads of the tricep, but the long head is the primary muscle worked. Skull crushers can be done using dumbbells, barbells, and resistance bands. Are you ready to make your tricep workout even better? Look no further than the well-known exercise called skull crushers . Skull crushers , also known as lying triceps extensions, are isolation exercises that work the triceps brachii muscle. Despite their name, skull crushers are a safe and effective triceps exercise. Here's what to know about how to do skull crushers , plus benefits and modifications.