6 secrets from around the world for the best night's sleep of your life

"There's a phrase for the kind of sleep of people who've never had difficulties with it," says Max Kirsten, a sleep coach who runs a wellbeing clinic in Knightsbridge and helps his clients tackle countless issues with sleep. "They have what's referred to as the sleep of the innocent."

If you can't remember your last, or indeed ever having, an 'innocent' sleep you're definitely not alone.

In a recent survey only 36 per cent of adults in the UK said they considered their sleep to be 'good', which was defined as the right balance of deep, slow-wave sleep and shallow, rapid eye movement (REM) sleep. And only eight percent of people said they got the upper end of the nightly recommendation of six to eight hours.

Kirsten explains that industrial and technological changes have changed humans' ability to sleep in line with nature's circadian rhythm: light bulbs for one, and all the lifestyle changes that have gone along with the fact that most of us no longer work outside in natural light, as well as the introduction of central heating to homes