The importance of a cool-down after exercise lies in its role in gradually lowering heart rates and helping the body transition to a resting state. Cooling down aids in preventing dizziness and blood pooling in the extremities, promoting better circulation. Additionally, it helps in the gradual removal of metabolic waste generated during exertion, reducing muscle soreness and stiffness. Stretching during the cool-down can enhance flexibility and assist in recovery by relieving muscle tension. Incorporating a proper cool-down routine into workouts fosters better long-term performance while minimizing the risk of injuries and promoting overall recovery.