Studies show that those who exercise the most have bigger brain volumes in key areas than those who do not. Keeping fit may also slow the rate of age-related decline in the brain.

In the trial, 52 healthy men and women had their brains scanned, were interviewed and had their exercise data collected.

Brain volume in key areas  -  including the temporal lobe which is involved in language, memory and emotion  -  were significantly lower in those who did the least exercise, say the American researchers.

It’s thought exercise boosts the growth and development of brain cells.

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