4. Lettuce


Most people would not think of preparing a salad just before bedtime, but lettuce contains high levels of something called lactucarium, which boasts effective sedative properties that have been described as working on the brain in a similar way to opium! A good bedtime suggestion is to simmer two or three large lettuce leaves in a cup of water for 10 minutes, add some mint and sip just before you go to bed.

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