The shuttle run is a common physical fitness test that measures speed, agility, and endurance. It involves running back and forth between two markers placed a specific distance apart, typically 10 or 20 meters. Participants sprint to one marker, touch the ground, and then return to the starting point, repeating the process for a set number of repetitions or within a time limit. This exercise is often used in schools and sports training to assess athletic performance. The shuttle run can help improve cardiovascular fitness and is a valuable component of training for various sports, including basketball and soccer.