Why Some People Thrive on Four Hours of Sleep

“Short sleepers, who make up less than one per cent of the population, spend significantly less time snoozing without any apparent health consequences.” By Shayla Love at The New Yorker. I envy these people — I need 8-9 hours. I get less than that most days, often as little as five, and that’s no fun. Short sleepers are often lonesome, awake at night when there’s nobody around. Is that true for…