😴 A small group of people around the world truly don't need more than four to six hours of sleep a night, thanks to a rare gene, Axios' Erica Pandey writes.⁠ ⁠ Why it matters: Very few people are natural short sleepers, but deeper study of the way their bodies and brains work offers valuable lessons for all of us.⁠ ⁠ The big picture: Short sleepers are a window into what life looks like when you get enough sleep, says Ying-Hui Fu, a neuroscientist and sleep researcher at UC San Francisco.⁠ ⁠ • She's a co-author of the landmark study on short sleepers that identified their unique gene.⁠ ⁠ So, what lessons can these rare short sleepers offer the rest of us? Fu explains at the link in our bio. ⁠ ⁠ 🎨 Illustration: Sarah Grillo/Axios⁠