英语翻译Babies sleep for up to eighteen hours a day.Sleep.No one

英语翻译
Babies sleep for up to eighteen hours a day.Sleep.No one can live without it.71 Research (研究) by the National Sleep Foundation in Washington says that we all need eight hours' sleep every night.Scientists have found that people who sleep for less than six and a half hours a night are more often ill than people who sleep for eight hours.72 "Workaholics" (工作狂) who sleep for less than five hours often die young,and do less well at work.
It also says that the idea that we need less sleep as we get older is untrue."People have no idea how important sleep is to their lives," Dr.Thomas Roth,director of the Foundation says." 73 ".
"But not too much of it,” says Professor Jim Home."Sleep is like food and drink," he believes:" 74 "Professor Home studied a group of people who could spend as many hours as they wanted in bed; after ten hours they didn't find it any easier to get up in the morning.And people who sleep for more than nine hours a night die younger than people who usually sleep for seven or eight.