The long-term effects of smoking on fitness include decreased cardiovascular capacity, endurance, and overall athletic performance. Smoking damages lung function, reducing oxygen delivery to the body, which is crucial for physical activity. Over time, smokers may experience chronic cough, increased breathlessness, and a greater risk of developing respiratory diseases. This chronic impact not only hampers athletic performance but also limits recovery and increases the risk of injuries. Quitting smoking, combined with a healthy lifestyle, can improve physical fitness and overall health long-term.