One study reports that people who sleep 5 hours or less per night generally weigh more than those who get a 7-hour sleep.

一项研究表明每天睡眠小于5小时的人比7小时的人更容易长胖。

youdao

In the study, the researchers kept animals awake for 20 hours per day followed by a four-hour sleep opportunity, over five consecutive days.

在这项研究中，研究人员让动物每天清醒20小时，然后给4小时时间睡眠。

youdao

But Armstrong and Aldrin asked to cancel the four-hour sleep period.

VOA: special.2009.07.15

The next morning, Sue awoke after an hour's sleep.

VOA: special.2009.08.01

Vanda Pharmaceuticals said yesterday it is testing its melatonin-stimulating drug tasilmelteon in something called Non-24-Hour Sleep Wake Disorder.

FORBES: Helping Blind Patients To Sleep

You may feel guilty hitting the snooze button and skipping the morning workout, but sometimes the extra hour of sleep is more important than an hour on the treadmill.

WSJ: When It's Worth It to Skip a Workout and Sleep

Recent studies conducted by scientists in Israel showed that even losing an hour of sleep a night can have a noticeable effect on a child's mental performance.

BBC: Children losing out on sleep