A jump rope is a simple piece of exercise equipment consisting of a long, flexible cord with handles on each end. It is used for a physical activity called jumping rope, where a person swings the rope over their head and jumps over it as it comes down. This activity can improve cardiovascular fitness, coordination, and agility. Jump ropes come in various materials, including plastic, cotton, and wire, and can be adjusted for different lengths to suit users of all heights. They are popular in many fitness routines and are often used in sports training, such as boxing and martial arts.