What message does your face send after a good night's sleep—or a poor one? Scottish researchers explored this by examining how tired features, like puffy eyes or drooping eyelids, influence perceptions of intelligence. They showed 200 volunteers digitally altered faces displaying signs of sleep deprivation, such as furrowed brows, sagging eyelids, and half-closed eyes.
The results were clear: Tired, less alert faces were rated as significantly less intelligent. This underscores the role facial dynamism plays in first impressions. Dr. Nicholas Hohlfeld, the study's lead author, noted in The Daily Mail, "I wanted to investigate perceptions of intelligence and sleep primarily to see if people can change perceived intelligence, independent of their physical attractiveness." Subtle cues like eye openness and brow position drive these judgments—we instinctively view less alert expressions as less sharp.
Read also: Why lack of sleep makes you fat
Sleep deprivation slows your brain, making routine tasks like online shopping or phone calls feel exhausting—things you breeze through when rested. You're also constantly hungry, craving sugary snacks like chocolate over healthy options like green smoothies to stay alert. Most strikingly, studies show you're three times more likely to catch a virus if you sleep less than seven hours a night. Time to prioritize early bedtimes!
READ: All you need to know about sleep disorders! #Sleep special
