It is true that smoking is dangerous to the health. Honestly as a smoker, smoking messes up your respiratory system and also cause cancers at the mouth. You can even hvae respiratory problems without even putting your mouth up to a good cigarette or blunt.
fit body, because having a fit body also means that your mind is mentally fit as well.
if someone convencing you to try a cigarette, just say a reason like i don't want smoking or inviting him/her to hang out with you