多年来,人们对午睡现象有许多不同的解释和看法。有的认为午睡是一种惰习;有的认为是头天晚上没睡好或午餐吃得过饱;也有的认为夏天气温高,皮肤血管扩张,使血液大量涌向皮肤及胃肠道,引起血液对大脑的供应相对减少,所以令人昏昏欲睡;还有人认为,夏季昼长夜短,晚上睡眠时间不足需用午睡 Over the years, there have been many different explanations and perceptions about the phenomenon of siesta. Some think that nap is a kind of inertia; some think it was the first night did not sleep well or lunch too full; others think summer high temperature, skin vasodilatation, so that a large number of blood flock to the skin and gastrointestinal tract, causing blood The supply of the brain is relatively reduced, so drowsy; others believe that the summer day and night long night, lack of sleep at night need to use nap