What is the primary purpose of a cool-down period after exercising?

The primary purpose of a cool-down period after exercising is to lower heart rate gradually. Engaging in a cool-down allows the body to transition from a high intensity state back to a resting state. This gradual decrease in activity helps to prevent dizziness or fainting that can occur if one stops abruptly after vigorous exercise. As the heart rate declines slowly, blood circulation continues to support the muscles and aids in the removal of metabolic waste products, which further promotes recovery.

In addition to this, while flexibility can be improved during a cool-down, particularly through stretching, the main goal is the controlled reduction of heart rate. Increasing strength is more effectively achieved through varied training regimens targeting muscle groups rather than through a cool-down. Preventing dehydration is important during and after exercising, but that is not the primary focus of the cool-down itself.