rapid-eye-movement sleep

And don't wake up earlier than usual to study; this could interfere with the rapid-eye-movement sleep that aids memory, he says.

不要比平常更早起床学习，这么做会妨碍有助记忆的快速眼动睡眠。

The brain is as active during REM (rapid eye movement) sleep when most vivid dreams occur as it is when fully awake, says Dr. Eric Nofzinger at the University of Pittsburgh.

匹兹堡大学的艾瑞克·诺夫辛格博士说，大脑在快速眼动睡眠期和完全清醒时一样活跃，大多数最生动的梦都发生在这个时候。

Make the Sandman your best friend when you use these tips to achieve REM, or rapid eye movement sleep — and experience its restorative benefits.

当你采用下面的建议来达到深度睡眠，瞌睡虫就是你最好的朋友，并体验恢复健康的益处。