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Exercise Prevents Brain Shrinkage

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Exercise has been shown to be good for the heart. New research confirms it can also benefit the brain. Aerobic exercise reversed brain shrinkage, especially of the hippocampus, a structure associated with memory. The study included 120 people between their late 50s and early 80s who were sedentary. Those randomly assigned to exercise walked 40 minutes three times a week, while the others attended attended yoga and stretching sessions. After about a year, the scientists found through magnetic resonance imaging that the hippocampus in the walkers was larger, while it had shrunk in those just doing stretching.

[PNAS , online Jan. 31, 2011]

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Approaching 70, if I didn't do my yoga, my knee would hurt too much to do the recommended walking. Both make their own invaluable contributions to my health.

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