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我们的睡眠时间比过去少了吗?多长时间的睡觉是充足的?如果你的睡眠时间比理想的睡眠时间少,但你感觉正常,这是否仍会损害你的健康?最近的研究提供了一些令人吃惊的答案。
Do we have less sleep time than before? How long does it take to get enough sleep? If you sleep less than ideal, but you feel normal, will this still damage your health? Recent studies have provided Some surprising answer.