GETTYGetting beauty sleep really does prevent us from becoming ugly, according to a new study.
Researchers recruited 25 university students, both male and female, to participate in a sleep experiment.
They also deemed the poorly rested subjects to be less attractive, less healthy and more sleepy compared to when they were well rested. After that, they were photographed by the researchers. People were rated by strangers as less healthy and approachable when they had exhausted faces.
"Findings show that acute sleep deprivation and looking exhausted are related to decreased attractiveness and health, as perceived by others", the study authors conclude.
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They were also asked if they would like to socialise with the person in the photo, the "Los Angeles Times" reported.
That's potentially a problem for a lot of people: According to the National Sleep Foundation, adults over the age of 18 need a minimum of seven hours of sleep a night - and many don't get that.
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. The Royal Society Open Science journal also found people viewed the more worn out individuals as less attractive. However, plenty of people fall short of getting as much sleep as they need - Gallup reports that 42 percent of adults in the US don't get enough shut-eye.
"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. The adults were asked to rate how attractive, healthy, or trustworthy they perceived the person in each photograph to be, as well as whether they would like to socialize with that person. Because we've evolved to try to avoid diseases, seeing an unhealthy-looking face makes us want to avoid that person. Basically, when you see someone who looks sick, the last thing you want to do is hang out with them. Perhaps when we don't get enough sleep, that results in restricted blood flow to the skin, which in turn would make us look more pale and exhausted. If you're struggling to get enough sleep, she recommends stopping work on your phone or computer an hour before bed, keeping your bedroom just for sleeping, and trying to have regular sleep hours.