Gum is an effective booster of mental performance, conferring all sorts of benefits without any side effects. Chewing gum boosts mental focus, but the effect dies after about 20 minutes. According to research, chewing a stick of gum also seems to reduce stress and anxiety, as well as improve mental performance during tasks. You Can improve your memory simply by chewing a piece of gum. They not only  freshen your breath but also lessen stress and depression. After chewing gum regularly, you will less likely to see a doctor for high blood pressure or high cholesterol.