Smoking is harmful to resistance

Smoking is harmful, not only to human health, but also to society. As long as there are signs of life, any organized organism must breathe, exhale carbon dioxide, inhale oxygen in the air and metabolize, so as to maintain normal life activities. Non smokers can breathe in a lot of fresh air every day; People who often smoke do not enjoy the benefits of nature. What they inhale is not fresh air, but toxic gases polluted by smoke.