It says they should be placed on a separate sleep surface from their parents,without blankets, pillows or other soft bedding.

VOA: special.2009.08.26

And they will study whether it is involving in controlling sleep quantity alone, or also what scientists call the "wakefulness-behavioral drive."

VOA: special.2009.08.26

For the study,they aimed for at least ten hours of sleep each night during the season.

VOA: special.2010.06.09

The study found that children also got less sleep if they did not have bedtime routines.

VOA: special.2010.06.09

And if they do not have a traditional coffin to sleep in during the day, they can find other answers, such as using a car.

VOA: special.2010.01.20

"But,professor, where will the students sleep?" "Where they always sleep in the classroom!"

VOA: special.2009.07.19

They all went to sleep. The next day, other people found the family.

VOA: special.2010.02.02

Then the old man and woman held the rain babies in the palms of their hands or they rocked them to sleep in a pair of wooden shoes.

VOA: special.2009.02.28

They did fine on just six hours of sleep a day.

VOA: special.2009.08.26

And they were not permitted to sleep at hotels for whites.

VOA: special.2009.04.05

It said they were getting far less sleep than they should.

VOA: special.2009.06.02

They left the road to sleep. Most never got back.

VOA: special.2009.12.17

they don't get much sleep when they're here because they're working."

VOA: standard.2010.02.26