8. Don’t go to bed until you’re sleepy.
If you go to bed when you’re just tired, you probably won’t be able to fall asleep, Krakow says. “Distinguish between the feeling of sleepiness and being tired. Get into bed when you’re sleepy -- eyes droopy, you’re drowsy, you feel like you’re nodding off. It’s a very different kind of feeling.”
8、如果你没有睡意,不要上床睡觉
克拉科夫说:如果当你感觉仅仅有点累的时候就上床睡觉的话,你很有可能不能入睡。要区分困倦和疲倦有不同感觉。当你感觉困倦的时候再上床睡觉——眼睛是没有精神的,你也会感到昏昏欲睡的,你会感到你好像在打盹似的。那是一种完全不同的感受。