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 start at one marker, sprint to the other, touch the ground, and return. This process is repeated for a set number of laps. The test is often used in schools and sports programs to assess athletic performance. It helps identify areas for improvement in physical fitness and is a valuable tool for coaches and trainers. The Shuttle Run can also be adapted for various age groups and skill levels.