Medical

Bad sleep makes you ugly

Bad sleep makes you ugly

As part of the study volunteers were asked to get a good night's sleep for two consecutive nights and were later asked to restrict themselves to just four hours sleep for the same period of time. "A 2013 study indicated that sleep-deprived people look a bit more sad, so smiling more may further counteract the effects of looking exhausted". The volunteers - who were given payment for their help - were sent home with a kit that would measure their night-time movements to check that they had not cheated and slept when they should not have.

In addition, they also deemed the poorly rested subjects to be less attractive, less healthy and more sleepy compared to when they were well rested.

It may not be a good idea, say scientists who found that not getting enough sleep for just two days in a row can make people less interested in hanging out with you.

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.




"Telling someone they look exhausted says more about your perception of them than you might think", the authors wrote.

According to the study, this makes sense from an evolutionary perspective. "A couple of participants were even rated as more attractive after sleep restriction". After this, they were photographed again. "Sleep deprivation is associated with a wide variety of physiological changes, such as impaired immune function, reduced cardiovascular health, and even impaired glucose metabolism", she says, which is why people who are sleep deprived can be viewed as less healthy. "We want our partners to be attractive and energetic".

The study sample size was small and there's still a lot more research to be done when it comes to determining how important those 7-8 hours of sleep really are, but we can always get behind another reason to catch up on some much-needed zzz's.

Journal Reference: Tina Sundelin, Mats Lekander, Kimmo Sorjonen, John Axelsson - Negative effects of restricted sleep on facial appearance and social appeal.


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