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[VOA慢速] VOA慢速精精听2019-01-31

提高英语听力能力 找对方法很重要!
本帖最后由 juneszhu 于 2019-1-31 14:37 编辑

Yet Bessesen says this exirement does fit in

with a larger body of research on the

importance of sleep. In fact, the amount of

sleep people get has been decreasing greatly

he says.  A 2015 study found the number of

Americans who sleep less 6 hours a night increased by about 30 million
between 1985 and 2012 .  Scullin and Bessesen offer some

ways to avoide health problems caused by

lack of sleep. Among these, they say

parents should try to get enough sleep

themselves to demonstrate its importance to

their children. Bessesen notes that even some

medical school programs have begun to

require student doctors to sleep more to prevent accidents.
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