How lack of sleep could be making you ugly

GETTY- STOCK IMAGEEven losing a few hours a night can be detrimental to our physical appearance

The research involved 25 male and female university students who were photographed after two days of sleep restriction and normal sleep. They were asked to get two good nights' sleep, and then two bad nights of sleep (maximum 4 hours).

According to reports, researchers then took make-up free images of each of the participants after both the good and bad sleep sessions before asking more than 100 strangers - all from Stockholm - to rate the images on attractiveness, health, sleepiness and trustworthiness.

"Having an unhealthy-looking face, whether due to sleep deprivation or otherwise, might thus activate disease-avoidance mechanisms in others and render one's surroundings less socially inclined", the study said.

The study discovered that people started to look more exhausted and unhealthy when their sleep was halved for just two nights.

Next, the researchers recruited 122 adults - referred to as "raters" - and asked them view each photograph. Not only that, but when people were exhausted, they were rated as less attractive and less healthy than when they were well rested.

The study published in the Royal Society journal Open Science is the third to connect poor sleep to a less attractive and less healthy appearance.

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Telling someone that they look exhausted could say more about our perception of that person than we might think, the study concludes.

Sundelin and colleagues speculate that the effect of sleep deprivation on skin blood coloration may partly explain why poorly rested adults were rated less attractive and healthy. "If you can see someone hasn't slept, you'll have a good idea that they might not be the best person to be around". Strangers were also less likely to want to socialise with that person.

"People seem to be able to tell when someone needs more sleep, and are more inclined to leave them alone in that case", the authors wrote in the new work. Researchers also asked, "How much would you like to socialize with this person in the picture?"

'We want our partners to be attractive and energetic.

Not getting enough sleep may crimp your social life as well as take a toll on your looks, according to a new study from Sweden.

However, statistics show that around 1 in 3 adults in the United States fail to get the recommended minimum of 7 hours of sleep each night.

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