Post-exercise cool-down routines are essential for recovery and injury prevention. Best practices include gradually decreasing the intensity of exercise, which helps the heart rate return to normal. Incorporating static stretching assists in flexibility and reduces muscle tension. Breathing exercises can help lower stress levels and encourage relaxation. A cool-down should last about 5 to 10 minutes and focus on major muscle groups used during the workout. Hydration and nutrition post-exercise are also vital for replenishing energy stores.