The "zipper drill" is a physical training exercise commonly used in sports, particularly in football and basketball. It focuses on improving agility, coordination, and quick directional changes. Participants typically move in a zigzag pattern, mimicking the motion of a zipper, which helps enhance their footwork and overall athletic performance. During the drill, athletes often pair up and take turns leading the movement, allowing them to practice both offensive and defensive skills. The zipper drill can be adapted for various skill levels and is effective for building teamwork and communication among players, making it a valuable addition to training sessions.