text: what are the benefits of chewing gum...? or what are the disadvantages of chewing gum, you can answer either one... improves concentration  at work, chewing gum helps us concentrate on the task at hand. many truck drivers find that chewing gum helps them stay alert at the wheel.   eases tension  as early as 1939, scientific studies showed how chewing reduces muscular tension and helps people feel more at ease. because it is so well-recognized for helping stay alert at the same time it eases tension, the u.s. armed forces have supplied chewing gum to its soldiers ever since world war i. it is still included in field and combat rations today.   freshens breath  chewing gum, especially a mint-flavored gum like wrigley's spearmint or doublemint, moistens and refreshes the mouth and throat and sweetens the breath.    helps fight tooth decay  after meals, it isn't always convenient to use a toothbrush. chewing gum stimulates the production of saliva, which helps neutralize acids from foods that may cause tooth decay.