Smoking has a detrimental impact on exercise performance by impairing lung function and reducing oxygen delivery to muscles. The harmful chemicals in cigarette smoke decrease cardiovascular efficiency, leading to quicker fatigue and lower overall performance during physical activities. Smokers may also experience longer recovery times and increased risk of injury due to compromised lung capacity. Furthermore, smoking can hinder muscle recovery and growth by affecting blood flow and nutrient delivery. Overall, quitting smoking can enhance one’s physical fitness and overall health.