Any regular exercise helps maintain the brain

Exercising even once a month at any time during middle age helps preserve brain function in older age; although the best results are gained by those who consistently exercise five or more times a month throughout their adulthood. — Filepic

Any regular leisure-time physical activity at any age is linked to better brain function in later life, suggests a study published online in the Journal of Neurology, Neurosurgery & Psychiatry.

The findings also suggested that maintaining an exercise routine throughout adulthood seems to be best for preserving mental acuity and memory.