Smoking adversely affects overall fitness and recovery by impairing lung function and cardiovascular health. The inhalation of harmful substances reduces oxygen supply to the body, which is crucial for physical performance. This restriction leads to decreased endurance and increased fatigue during activities. Furthermore, smoking slows the healing process, as it hampers blood flow and nutrient delivery to tissues. Smokers also experience higher rates of injuries and complications, making it challenging to maintain a consistent exercise routine, ultimately leading to poorer fitness levels and longer recovery times.