Sleep-deprived? It Shows On Your Face
A small study in Sweden looked into the things that people notice to recognise that someone is sleep-deprived.
After showing photographs of men and women who have had 8 hours of sleep and those who have been sleep-deprived for 31 hours, participants noticed the common thing amongst those who’ve been lacking sleep: hanging eyelids, droopy corners of the mouth, dark circle around the eyes.
“The results show that sleep deprivation affects features relating to the eyes, mouth, and skin, and that these features function as cues of sleep loss to other people.”
Read more about it in this abstract.