In the US Army smokeless chewing tobacco is quite common. It doesn't hurt your CV system as much (it still taxes the heart). As near as I can tell it doesn't hurt VO2 max.
All the same, it is still a nasty habit. You still have various cancer risks and it is hard on your gums.
I've heard alot about that, and know a few guys who tried it -- but I think I'd rather just quit altogether and leave it all behind.
Personally, I think smoking is something that should be done as a treat and not as a habit. I like a nice cigar or pipe now and again, but smoking cigarettes as a habit is a waste of money, taxes your health, and returns little enjoyment.
EXACTLY, EXACTLY EXACTLY! My thoughts exactly.
"In war, there are no unwounded soldiers." - Josť Narosky