The checkup started really well. Blood pressure was right on track, blood oxygen was apparently great and my heart rate was, as usual, as slow as an athlete’s. There was just one problem: I'm not much of an athlete. Not that I'm unhealthy: I windsurf when the weather is warm and windy, and get out on a bicycle every now and then. Heck, I've even been known to break into a gentle run on special occasions. But I'm not deluded enough to think I'm in top shape.