"Exercise has the beneficial effect of slowing down or even counteracting age-related decline in mental and physical capacity," says Dr Kathrin Rehfeld, lead author of the study, based at the German center for Neurodegenerative Diseases, Magdeburg, Germany. 

"In this study, we show that two different types of physical exercise (dancing and endurance training) both increase the area of the brain that declines with age. In comparison, it was only dancing that lead to noticeable behavioral changes in terms of improved balance."

Continued here: Dancing can reverse the signs of ageing in the brain