Warm-up exercises are physical activities performed before more intense workouts or sports. They help prepare the body by increasing blood flow to the muscles, enhancing flexibility, and reducing the risk of injury. Common warm-up activities include light jogging, dynamic stretches, and mobility drills that target the major muscle groups. These exercises typically last 5 to 15 minutes and focus on gradually raising the heart rate and loosening the joints. Incorporating warm-up exercises into a fitness routine is essential for athletes and casual exercisers alike, as it promotes better performance and overall safety during physical activities.