Why humans get less sleep than other primates

Sleeping in groups, predator threats or not, is also a natural extension of the way that people in small-scale societies live during the day, Yetish says. "In my opinion, people are almost never alone in these types of communities."

โพสต์โดย : bao เมื่อ 26 พ.ค. 2565 16:17:49 น. อ่าน 213 ตอบ 1