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德国精神病研究所睡眠专家研究发现,人体睡眠要遵循昼夜节律,除夜晚外,白天也需要睡眠。在上午9时、中午1时和下午5时,有3个睡眠高峰,尤其以中午1时的高峰较明显。也就是说,除了夜间睡眠外,人在白天有一个以4小时为间隔的睡眠节律。专家们认为,人白天的睡眠节律往往被繁忙的工作和紧张情绪所掩盖,或被酒茶之类具有兴奋神经作用的饮料所消除。所以,有些人白天不显困乏。然
Psychiatric Institute of Germany sleep experts study found that human sleep to follow the circadian rhythm, in addition to night, during the day also need sleep. At 9 a.m., 1 a.m. and 5 p.m., there were 3 sleep peaks, especially at 1 a.m. That is to say, in addition to nighttime sleep, people have a sleep rhythm with 4-hour intervals during the day. Experts believe that daytime sleep rhythms are often overshadowed by heavy work and stress, or by the excitement of drinks like alcohol and tea. Therefore, some people do not feel sleepy during the day. Of course