When you do finally get up, you're groggy and disoriented thanks to sleep inertia.

当你终于起床时，由于睡眠惯性，你会感到昏昏沉沉，失去方向。

The deeper the sleep the more potent the sleep inertia and so the snoozing begins.

睡的越深，惰性越大，所以就开始贪睡。

When you do finally get up, you’re groggy and disoriented thanks to sleep inertia.

当你终于起床时，由于睡眠惯性，你会昏昏沉沉，迷失方向。

This groggy and tired state is known as " sleep inertia" , and its strength is related to which sleep stage you are waking up out of.

此种疲惫的状态为“惰性睡眠”，惰性的强度与当时所处的睡眠阶段有关。

The feeling Twery described is called sleep inertia -- the period when you awake from a very deep sleep. For a time, you are unable to think clearly.

特维里把这种感觉称为睡眠惯性——从深度睡眠中醒过来的那段时间。短时间之内，你无法清楚地思考。