Chewing gum increases saliva flow, keeping the mouth more acid and reducing bad bacteria. In addition, the act of chewing stimulates areas of the brain that enhance thinking and memory. Who knew? For years, we did not allow gum chewing in school! Now we may want to pass it out, especially in challenging classes. This scientific information is just one of the many suggestions Goodwin offers to enhance our cognitive abilities, no matter what our age.
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