A research project at McGill University took 60 people 62-90 and tested their balance and cognitive ability. Half went on a walking regime and half learned to tango. Those who walked improved their balance. Those who learned to tango improved both balance and cognitive skills. We already know how to walk; it is the learning of new skills/information that feeds the brain. I have a folder of these sorts of studies, waiting for when I "retire" enough to write about the importance of dance to the brain. To dance takes music! So keep learning/writing new stuff! I'll dance to anything.