Do you feel sleepy and unable to concentrate every day after lunch? Or maybe you’re a night owl and like to work late into the evening hours? If so, you probably reach for caffeine to help improve your focus when your body and mind are telling you it’s time for a nap. As it turns out, a recent study published in the British Journal of Psychology found evidence that chewing sugar-free gum for 30 minutes improves concentration and memory. If you’d like to know more about this simple solution for waking up your brain, as well as how it can prevent cavities, a Fayetteville dentist discusses how it works.