I woke up at 2 a.m. I had to pee, of course. When I turned on the bathroom light, it hurt my eyes. How can light hurt your eyes? I thought your eyes and brain can't feel pain. But then if your brain can’t hurt, how can you have a headache? How can I be over 60 and still have more questions than a six-year-old?

Why do I have to use the bathroom in the middle of the night? The web is crawling with brain-training exercises; where are the bladder-training exercises? But at least there's a silver lining to having to get up out of a warm bed in the middle of the night. It's being able to get back into a warm bed in the middle of the night. And the icing on the cake is being able to go to sleep for the second time in one night.