I don't understand what's so impossible about it? If you exercise while smoking, your lungs will be fine. Only stamina will remain at the same level, but not lower. If you smoke low-quality tobacco, of course, it will affect your body a lot. With quality tobacco, it's the opposite. The effect is almost invisible. I prefer to smoke self-smoking, so I buy expensive, high-quality tobacco. Right now, I'm buying https://buyamberleaf.com. I like it a lot because of its pleasant smell and lightness. And I've never had any shortness of breath because of it.