Daily glass of milk can reduce bowel cancer risk, study reveals 研究显示每天喝一杯 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
Most rainforests too degraded to provide good habitats 多数雨林退化严重而无法为 ...
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.
打鼾≠睡得香！这可能是病，得治
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、 ...