Pas besoin de sommeil: Madonna et Margaret Thatcher.
The women who thrive on just four hours' sleep
Experts say fewer than seven hours' shut-eye can seriously harm your health...unless you're one of the 'sleepless elite'
By Lucy Elkins
Last updated at 11:02 AM on 27th April 2011
Experts say fewer than seven hours' shut-eye can seriously harm your health ... unless you are one of the 'sleepless elite'.
For most of us, anything earlier than 5am is considered the middle of the night — a time of day you see only when you have a newborn baby or take cheap flights.
COULD YOU COPE WITH LESS?
These days, many of us are so busy that we describe ourselves as ‘time poor’ — so could we all try to increase our spare time by having less sleep?
‘We have done studies here at the Sleep Research Centre where we have got groups of people and reduced the amount they can sleep by 20 minutes a week,’ says expert Professor Jim Horne.
‘So rather than having eight hours’ sleep, they have seven hours and 40 minutes.
‘Then the next week we cut them down by another 20 minutes, and so on.
‘What we found is that they actually felt more and not less alert — perhaps because the quality of their sleep was improving.
'However, these effects plateaued for most people at around six hours.
Any less than that and their concentration goes and their mood deteriorates. So unless you are genetically programmed to need only five hours’ sleep, then it’s not the lifestyle for you.’
Source: Mail Online.
No need for sleep: Margaret Thatcher and Madonna famously do not need much snooze-time to function on all cylinders.