Sometimes, counting sheep just doesn't cut it, and you need something a little more robust in your night-time routine to help you drift off.
Counting down the hours, minutes, seconds and milliseconds of sleep you'll fit in when you can drift off is counter-productive and will likely make you more stressed.
A recent study found that 36% of UK adults struggle to get to sleep on a weekly basis – that's a lot of people not getting enough shut-eye.