You can probably find something natural to chew on, like some kind of plant or bark, that is much better for you than commercialized chewing gum
loaded up with sugar and/or aspartame and/or Splenda and/or fluoride or whatever other rat poison they put in them.
Funny you opened this thread.
I always chew gum when I am playing an intense FPS, or modeling in maya.
Dont know why but it helps me... I do best with spearmint
Guess it keeps my brains higher functions just busy enough to keep it querying for my next thought.