The purpose of a cool-down after an intense workout is to gradually bring the body back to its resting state. This process aids in reducing heart rate and preventing dizziness or faintness. Additionally, a cool-down may involve stretching, which helps maintain flexibility and reduce muscle soreness by promoting blood flow to recovering muscles. Implementing a cool-down routine can prevent injuries and support recovery, making it a key component of any fitness regimen for optimal long-term results.