Just an anecdote, but I was at a wedding where I talked with a retirement age neurologist. He basically said the same thing. It didn't surprise me that later he

Just an anecdote, but I was at a wedding where I talked with a retirement age neurologist. He basically said the same thing. It didn't surprise me that later he and his wife were out on the dance floor start to finish, outlasting most of the 20 year olds, and dancing everything from tango to hip hop. Put a real smile on a lot of people's faces.