I spent three days last week at Georgetown University's Clinical Research Center. I thought it was a good way to spend my birthday. Dr. Baraniuk is studying the effect of exercise on the brain. Dr. Baraniuk reminds me of Mr. Rogers and the nurses were constantly taking care of me and the rest of the team made sure every detail of the study was done perfectly. He needs more volunteers and he wants older people. If it will help, I will pick you up at the airport and drive you to their center.