If you’ve ever tried them, you know side planks are challenging­—even more than regular planks. But they’re a critical move, says Keli Roberts, an exercise physiologist with the American College of ...

This move engages your triceps, shoulders, upper back, and chest simultaneously while maintaining a solid plank position. But ...

Core exercises like side planks offer strength and stability, and they help prevent injuries. But there’s one advanced variation that targets muscles regular side planks miss: the Copenhagen plank. “A ...