Skull crushers, also known as lying triceps extensions, are a strength exercise that isolates and works the triceps muscle ...

WHAT'S YOUR GO-TO arm day exercise? There's a good chance your answer is the dumbbell biceps curl. That's a great ...

Brace your core as you curl the bar up to your chest, keeping your elbows pinned to your waist. Return under control to the start position. Why: The barbell bicep curl is the king of arm exercises ...