Of course some chewing gum might help your breath but a Japanese study also found that those who chew twice a day for two weeks increase there feelings of well being. Other study participants who chewed gum while being subjected to a stress inducing task also showed the lower levels of Cortisol and saliva than those who didn't have gum.
And not because of the ingredients in the gum but simply from the act of chewing known as "Mastication". This repetitive motion is directly related to increased activity in the cerebral area of the brain and relaxation.
Good post
Thank you