[Phalanx]

I haven't completely given up any of the following, but cut down significantly.
Weed...liver issues.

Coke & most softdrinks...They're too sugary...after hearing that you literally had to do a half hours excersize to work off the SHIT you put into yourself with one can of coke...I thought about how much of the stuff I drank, and in fact most people drink more...but it's bad news.

Fast food - Trying to eliminate some of the foods I KNOW I shouldn't eat...McDonalds and KFC are something I will seldom indulge in anymore, even though the urges are sometimes really fucked up...Pizza has been cut down to about 1/4 of the amount I used to eat, and even then, out of those times, sometimes I'll make my own on flatbread with lots of fresh vegitraian ingredients...of course sometimes I'll still hit the pepperoni from a home delivery place, but...yknow...
Even when I eat subway most of the time I don't really even get the things there I really want anymore.
The fast food thing isn't only about good health...it really is one of the biggest rip-offs when you look at it. It's usually cheap crappy product, unhealthier than it ought to be, sold at the highest possible prices. You want an example, go find out what McD makes on an average burger vs how much they spend.
Then figure out how much it'd take you to make a superior product, and you'll feel like kicking your own ass every time you consider eating at those places.

Drinking and smoking have never been a problem for me...I'll only ever smoke by stealing a draw from someone elses when I'm along the way to being drunk (admitedly, I like the headspin when I'm drunk, but wonder the next morning how people smoke regularly, if their breathe smells anything like my mouth tastes when I wake up after having smoked...), but then I don't drink enough for it to be a real issue, we're talking once every 2 weeks maybe, and most of the time among nonsmokers...

Had to give up some sports a while back due to illness.
That's about it really.