Insomnia might feel like a punishment from the gods, but it is generally thought to be a mind-body problem. While your body would like to sleep, your mind is much more interested in listing every thing you need to do tomorrow. But there’s a difference between a bad night’s sleep and a night of insomnia.

There is no negotiating with insomnia — you are at the mercy of your brain’s whims, like a pregnant vegetarian who finds herself eating slices of bologna slathered in jam. Thus the thrashing in bed (which makes us so popular with loved ones) begins: “I want to be on my left side. Wait, that is not quite right. Put your right arm up a bit. Now, uh, bend your left knee and put your left hand under your pillow. No, bend your knee… More…