Secondly, nicotine and other components in cigarettes will damage vascular endothelium and affect the normal vasodilation and contraction function of blood vessels, which is also the basis for smoking to increase the incidence of hypertension and atherosclerosis. In the state of exercise, our body will expand the blood vessels of the muscles involved in exercise as much as possible to ensure that the muscles can get enough oxygen and energy. When the function of blood vessels is impaired, the endurance of muscles will be impaired, and the function of small blood vessels will also be affected, which will lead to the slower recovery of muscles after exercise. Strength training without full recovery will do great damage to muscles.
Finally, smoking can improve the excitability and metabolic rate of the central nervous system, which is why many heavy smokers are thin and easy to gain weight after quitting smoking. These two points do not sound negative to fitness, and may even have a little positive effect, but this is not the case. Fitness improves metabolic rate by increasing the content of body muscles, which are tissues with high metabolism and high water content. If the metabolism is improved by ingesting exogenous substances, it will affect the heart function. Some diet pills also claim to increase metabolic rate to lose weight. Such substances may cause tachycardia, palpitation and other symptoms, similar to mild hyperthyroidism. This state is definitely unhealthy. In the long run, it will only damage the heart function.
Finally, smoking is harmful to all people. Whether it is fitness or not, this carcinogenic and organ-damaging effect always exists. Many people think that smoking has less serious effects on their health. In fact, the harm of smoking to human body is a cumulative process. When you are young, your body has a strong reserve ability and often has no symptoms. But when you get older, all kinds of problems brought by smoking will be exposed. It is suggested that smokers give up smoking as soon as possible and enjoy a healthy life.