11.   But of course we do need sleep, and study after study indicates most Americans are not getting enough rest at night.

12.   Campaigning politicians report they eat less and need less sleep.

13.   He needs his sleep.

14.   He needs the sleep.

15.   He needed less sleep.

16.   I need some sleep.

17.   Provigil helps narcolepsy patients stay awake without needing more sleep or experiencing the euphoric side effects and the quick ups and downs associated with current treatments, researchers said.

18.   The team reasoned that tired animals produce oleamide in large amounts to induce normal sleep, and that levels fall when sleep is no longer needed.

19.   Who surely need their sleep.

20.   You need your sleep.