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Submission + - why exercise boosts brainpower

aditi writes: CNN reports that 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.Researchers used magnetic resonance imaging scans to help document the process in mice — and then used MRIs to look at the brains of people before and after exercise.They found the same patterns, which suggests that people also grow new brain cells when they exercise.

The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!" (I found it!) but "That's funny ..." -- Isaac Asimov