8 Ways to Use Your Mind to Live Longer: "Your brain grows. As you get older, your brain begins to shrink. But in a study in NeuroReport, researchers discovered that the prefrontal cortex and the anterior right insula, areas linked to attention and sensory processing, were thicker and more robust in those who meditate. "It's like exercise for the brain, making it stronger," says Rick Hanson, Ph.D., a neuropsychologist in San Rafael, California, and author of Buddha's Brain.
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