Before I go to sleep, I put on my Happy Feet—socks, according to their website, “designed to separate, stretch, and align your toes”—and I wear them for ~30 minutes. People never think about their feet—unless they are some fetishist, which is, I’m afraid to say, perverse—but 25% of the body's bones are in the feet, and, according to Reflexology, parts of each foot correspond to different body parts. There have been times when, suffering from a headache or backache, I put on my Happy Feet and the pain goes away almost instantly.