The notion of “beauty sleep” is no myth: people who get more sleep are more attractive, new research suggests. A researcher in Sweden took mid-afternoon photos of 23 people between the ages of 18 and 31; some had gotten plenty of sleep the previous night, while others hadn’t slept for 31 hours and had only gotten five hours the night before that, Time reports.
Another group of people evaluated the looks of the 23 subjects, and said the sleep-deprived batch looked less healthy, less attractive, and more tired. Now, the researcher wants to study other adages. “There are so many old 'sayings' or beliefs incorporated in our culture, but we do not know if they are true,” he notes. “It is our scientists' responsibility to evaluate the truth in them.”