X3’s heavy resistance bands can produce forces exceeding 600 pounds. Using heavy resistance bands without a heavy-duty resistance band bar like the X3 bar can injure your wrists and ankles. You won’t be able to fully perform the movement with the proper range of motion as your joints cannot handle these forces without protection. That’s why X3 has a specially machined steel resistance band bar with internal bearings, like an Olympic bar, so your grip is continuously optimized to support heavy loads. Standard resistance bands with handles can’t handle the necessary forces required for muscle growth and often don’t provide adequate wrist protection.
