A daily routine and daily exposure to sunlight help regulate sleep. Research backs this up and I see it in myself. My best sleeps come after days when I get up and out and do the things I do at the usual time.
Last night my sleep went off the rails, and I’m convinced the problem was at least partly related to light. Let me explain.
The bed—so sleep experts maintain—should only be used for sleep and sex. People who can’t sleep should get up and do something: iron shirts, look at picture books, plan a backyard stupa. Anything, for God’s sake, but toss and turn among the sheets.
I know I should follow this advice. But every fiber of my body cries out for staying flat on my back.