还能增强免疫功能，提高对疾病的抵抗力，改善精神状态，可以说睡眠是天然的补药。Good sleep can not only eliminate body fatigue， and promote the growth of body tissues and cells self-repair， but also enhance immune function， improve disease resistance， and improve mental state， it can be said that sleep is a natural tonic.
今天来跟大家推荐词根somn，意思是“睡眠”，来自拉丁语的somn。同义词根有来自拉丁语的dorm和来自希腊语的com, hypn。1.somnolent['sɔmnələnt]somn (= sleep)睡觉的 adj.
The best way to get used to a sleeping routine is to set a specific time each night that you will go to bed.
“Recognize when you are layering worries and don’t beat yourself up，” she said. “Don’t worry about not sleeping or feeling worried. Instead， consider some sort of ‘active relaxation’ practice， such as breath work， progressive relaxation or meditation.”
随着节奏越来越快，工作压力大，焦虑，夜生活丰富，好好地睡一觉已经是一件不容易的事。更要命的是，几年熬夜下来，我们可能会发现，脑子好像换成了限速低配版似的，反应力、专注力、思维灵感、意志力，都集体罢工不干，思考的时候，甚至出现脑雾，整天浑浑噩噩的，不像是在过清醒的日子。
Lethargy有无精打采、死气沉沉的意思，也可以表示昏睡、嗜眠，与之相对的是则是失眠 。Lethargy: the state of not having any energy or enthusiasm for doing things。
