Proper warm-up before workouts is significant as it prepares the body for physical activity by increasing blood flow to muscles, enhancing flexibility, and reducing the risk of injuries. A warm-up typically involves dynamic stretching and light aerobic activity that gradually elevates heart rate, ensuring that muscles are warmed up and ready to perform effectively. This practice also promotes mental focus and can enhance overall performance during the workout by improving muscle responsiveness and coordination, ultimately leading to more successful and injury-free exercise sessions.