如何知道自己的睡眠是充足的?自我检验的一种好方法就是算一算你要多长时间才能睡着。如果在5-10分钟内睡着,你就有可能睡眠不足。如果用15分钟或更长的时间,你大概有充足的睡眠。有一个办法可以用来对此进行测试,即在上床睡觉之后把闹钟铃声定在10分钟之后。铃声响起的时候,看看自己是否还醒着。此外,如果你白天上课的时候睡着了,也很有可能是睡得不够的原因。 How do you know if your sleep is adequate? A good way to self-test is to calculate how long it takes you to fall asleep. If you fall asleep within 5-10 minutes, you may have insufficient sleep. If you use 15 minutes or more, you probably have enough sleep. One way to test this is to set the alarm bell to 10 minutes after going to bed. When the bell rings, see if you are still awake. In addition, if you fall asleep during class during the day, it is very likely that you did not sleep enough.