Around 10% of adults in the world suffer from insomnia, a common sleep disorder that causes difficulty in falling asleep and getting a good quality of sleep.
This is the method that the military use to help them fall asleep in less than 120 seconds joe.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from joe.co.uk Daily Mail and Mail on Sunday newspapers.