Warming up before exercising is essential for preventing injuries and enhancing performance. A proper warm-up gradually increases heart rate and blood flow to the muscles, improving their elasticity and readiness for more intense activity. It also prepares the body mentally and physically, reducing the risk of strains or sprains. Additionally, warming up can enhance performance by improving joint mobility and preparing energy systems. Overall, incorporating a warm-up routine into workouts is a critical aspect of a safe and effective exercise regimen.