△怎样才算睡眠足够?睡眠质量不良的人,会出现下列现象:早上起床时会头晕,常感觉心悸、紧张、焦虑、白天嗜睡、早上到中午猛打哈欠。严重者更会出现反应迟钝、记忆力衰退、注意力不集中、青少年功课退步、在职者工作效率下降等,大部分的人会以为年龄因素使然,而忽略对睡眠质量 △ how to sleep enough? Poor quality of sleep, there will be the following phenomena: get up in the morning will be dizzy, often feel palpitations, nervousness, anxiety, daytime sleepiness, yawn in the morning to noon. In severe cases, there may be unresponsiveness, memory loss, poor concentration, adolescent homework decline, work efficiency decline, etc., most people will think that the age factor, while ignoring the quality of sleep