You program the clock with the latest time at which you want to be wakened, and it then duly wakes you during the last light sleep phase before that.

你给时钟设定了你想要醒来的最晚时间，然后它会在之前的浅睡眠阶段按时叫醒你。

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Alcoholics report having no dreams because alcohol disrupts REM sleep, a critical sleep phase for both brain and body health.

对酗酒者的研究报告指出酗酒者不会做梦，因为酒精干扰了REM睡眠(快速动眼期睡眠)——对大脑和身体都极为重要的睡眠步骤。

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Beginning at adolescence, kids have what's called a delayed sleep phase, where they start sleep later and sleep later in the morning.

青春期伊始，孩子们会产生所谓的睡眠相位后移症，症状表现为入睡比平时晚，起床也比平时晚。

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The Sense of Smell Institute found that lavender increases the amount of time spent in the restful, restorative phase of sleep.

CNN: Sleep tips for the road-weary

Sleep therapists correct the syndrome by forcing the advanced phase patients to stay up late and exposing them to bright light around 0230 AM - helping to "manually" reset the clock.

BBC: 'Sleepyhead gene' discovered