Smoking negatively affects exercise performance and recovery in various ways. It reduces lung capacity, diminishing the body's ability to transport oxygen to muscles, which can decrease endurance and overall fitness levels. The harmful chemicals in tobacco can impair circulation, leading to slower recovery times as nutrients are less effectively delivered to damaged tissues. Furthermore, smoking is linked to increased inflammation and a higher risk of injuries. Quitting smoking can significantly improve an athlete's performance and speed up recovery, ultimately contributing to better health outcomes.