Luke O’Neill: If you’re not one of the 1pc who can manage on five hours’ sleep, here’s how to supercharge your shuteye

We all need sleep. It’s essential for our health and well-being. But it turns out we are all different when it comes to how much shuteye we need. Some get away with six hours a night, others need nine or 10. Science has recently turned attention to those who need a lot less sleep than average, meaning five hours or less. They are called short sleepers.