A chin-up bar is a piece of exercise equipment designed for performing chin-ups and pull-ups. It typically consists of a horizontal bar mounted at a height that allows users to hang from it with their hands. This equipment can be found in gyms or installed at home, often in doorways or as part of a larger home gym setup. Chin-up bars help strengthen the upper body, particularly the back, biceps, and shoulders. They are versatile and can be used for various exercises, including leg raises and hanging knee tucks, making them a valuable addition to any fitness routine.