The mainstream view in neuroscience today is that the living brain is actually neuroplastic, meaning its circuits are constantly changing in response to what we do.
As we think, perceive, form memories or learn new skills, the connections between brain cells also change and strengthen. Far from being hard-wired, the brain has circuits that very rapidly form, un-form and reform.
Researchers at Cardiff University in the UK found that the physical activity with the largest positive impact on the brain was walking at least two miles a day, biking 10 miles, or regularly engaging in vigorous exercise.
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