Ten ways to cure insomnia

The BBC has compiled a list of 10 suggestions to help cure insomnia, based on suggestions from site visitors. Some are familiar (counting backwards, not using computers close to bedtime) but others are more esoteric:

Eat a sandwich, thickly filled with lettuce, about half an hour before going to bed. You should sleep like a log.

Let us know any other good sleep-inducing tricks you use in the comments.
10 tips to help relieve insomnia [BBC]