Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

要远离打鼾，我们要先知道鼾声从何而来。当人入睡后，颈部肌肉逐渐放松，导致上呼吸道变得狭窄，无法让足够的空气进入肺部。由于气体流通受阻，当人吸气和呼气时，上呼吸道周围的软组织就会产生振动，形成鼾声。气道越窄，振动幅度越大，鼾声就越大。另外，鼻中隔偏曲、鼻息肉、下颌短小，以及舌头或扁桃体肥大等，都会引发打鼾。

Thousands of self-proclaimed “TikTok refugees” are flocking to Xiaohongshu, or RedNote by US users, which surged to the top position on Apple’s US App Store on Tuesday, as TikTok faces a potential ban ...