The very worst thing you can do when you can’t sleep or need a loo run in the early hours is to turn on the big light to check the time.
The sudden glare jolting you out of a half-sleep means you can kiss goodbye any hope of a restful night. Even checking your phone for the time can mean wrecking any chance of catching those precious 40 winks, especially if you’ve got missed calls or notifications you can’t stop yourself from checking.
