Well,. I find no intellectual stimulation whatsoever in swimming distance free because I do not incorporate anything mindful whatsoever. My IQ during my distance free equals that of about my stroke rate which is low, so therefore, there can never be anything intellectual happening. This would probably be a good time for sometime to do brain surgery on me because nothing is happening upstairs whatsoever.And I thought everyone knew that us former backstrokers, and those who still venture with this stroke, find pleasure, intrigue, and challenge of swimming belly up and backwards. At least this stroke is by far and away the most challenging since we can't see where we are going.Donna