The primary purpose of stretching after a workout is to promote flexibility and aid in recovery. Post-exercise stretching helps realign the muscles, reduce tightness, and improve overall range of motion. Additionally, it assists in flushing out metabolic waste products resulting from exercise, which can help alleviate soreness. Incorporating stretching into a cool-down routine is beneficial for restoring muscular balance and preparing the body for subsequent workouts, contributing to overall injury prevention and long-term physical performance.