Photo: Noah Clayton Getty ImagesFrom Scientific America:
How can you stay sharp into old age? It is not just a matter of winning the genetic lottery. What you do can make a difference
As everybody knows, if you do not work out, your muscles get flaccid. What most people don’t realize, however, is that your brain also stays in better shape when you exercise. And not just challenging your noggin by, for example, learning a new language, doing difficult crosswords or taking on other intellectually stimulating tasks. As researchers are finding, physical exercise is critical to vigorous mental health, too.
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