The Sleep Sprinter, the 3 a.m. Doomscroller, the Human Snooze Button — we’re all familiar with these archetypes of sleep deprivation.

You probably already know that inadequate sleep can raise your risk of chronic health problems like heart disease, high blood pressure, diabetes and obesity, but how can it affect your personality?

A team of international researchers set out to explore how sleep experiences are reflected in health, behavior and brain activity. 3

They analyzed data from 770 young adults, examining everything from their use of sleep aids to MRI scans of their brains and their performance on memory tests, to devise five distinct profiles linking sleep habits to biological, psychological and social traits.

“Sleep is made up of many dimensions, not just how long we sle

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