Study shows why exercise boosts brainpower Reuters/Yahoo!News 3/12/07 "Exercise boosts brainpower by building new brain cells in a brain region linked with memory and memory loss...Tests on mice showed they grew new brain cells in a brain region called the dentate gyrus, a part of the hippocampus that is known to be affected in the age-related memory decline that begins around age 30 for most humans...people also grow new brain cells when they exercise(based on MRI scans)...Exercise generated blood flow to the dentate gyrus of the people, and the more fit a person got, the more blood flow the MRI detected, the researchers found..."
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