我回想起在1993年我开始倾向素食的时候，我明显睡的更少了，尤其考虑到当时正是我在大学的第三个学期，还是蛮紧张的状态。
I definitely noticed that when I first went vegetarian in 1993, I needed less sleep to feel rested — that was during the time I was taking a massive courseload to graduate college in three semesters.
他说：“青少年每晚需要保证九个小时的睡眠，但有四分之一的人每晚只睡六个小时或者更少。”
"Adolescents need nine hours of sleep a night and about a fourth of them get six hours or less," he said.
令人惊讶的是，如果睡眠的时间更少，甚至每晚只睡4小时，男性的死亡率并没有明显上升。 而如果女性的平均睡眠小于4小时，她们的寿命则会缩短。
Surprisingly, less sleep, even as little as four hours a night, didn't significantly increase deaths for men and only lowered survival for women if they averaged less than four hours.
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