Charles Dickens

Some years ago, a temporary inability to sleep, referable to a distressing impression, caused me to walk about the streets all night, for a series of several nights. The disorder might have taken a long time to conquer, if it had been faintly experimented on in bed; but, it was soon defeated by the brisk treatment of getting up directly after lying down, and going out, and coming home tired at sunrise.
-Charles Dickens