觉醒系统是游族网络出品的网页游戏《神权》中的特色玩法。
如今，睡眠核心研究已经成为睡眠研究的主要领域。闹觉醒系统外有许多相互联系的睡眠中心。
They have become the focus of what is now one of the most prominent fields of research into sleep.
睡得比你所需应该睡的时间长了会减弱你的睡眠系统，当你降低了你先前的觉醒度，暴露于阳光中，你的活动水平和你的身体体温都处于低水平太久。
Sleeping longer than you need to will weaken your sleep system, as you reduce your prior wakefulness, exposure to sunlight, activity levels, and your body temperature at a low for too long.
相对应的交感神经系统，一张贯穿脊椎的由神经和神经元组成的网会将信息传递到身体的每个器官，它是形成觉醒与兴奋的原因。
The sympathetic nervous system—a web of nerves and neurons running through the spinal cord and spread to virtually every organ in the body—is responsible for arousal and excitement.
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