A massage ball is a small, often round tool used for self-massage and muscle relief. Typically made of rubber or foam, it can vary in size and texture, allowing users to target specific areas of tension in the body. By rolling the ball over sore muscles, individuals can alleviate tightness and improve blood circulation. These balls are popular among athletes and fitness enthusiasts, as they can be used before or after workouts to enhance recovery. They are also effective for people with chronic pain or those who spend long hours sitting, providing a convenient way to relieve discomfort at home or in the office.