Skull crushers — no exercise has a name more intimidating than this. Sure, burpees are difficult, but their name sounds harmless enough. However, skull crushers have self-inflicted harm written all ...

If you don’t want your upper arms waving long after you’ve said goodbye, you’ll need to work on your triceps. The supine triceps extension, sometimes called the skull crusher, is one of the simplest ...

While abs and glutes workouts may get a bit more attention on social media these days, it's equally important to show your upper body some love. That's because building upper-body strength can help ...