I think that is normal because of the toxins?
Thats because cigarettes are full of evil c rap your not meant to be breathing in
Dont smoke...that sensation is the nicotine high...
hint: it has to do with oxygen
STOP SMOKING before it kills or cripples you! It crippled me!
that is because your brain cannot figure how all of a sudden you get stupid
Research what they use to make cigarettes - that's why. All those chemicals are NO good!