Because there are some people for whom-no one is exactly or very few people are exactly 24 hours rhythms.
因為有人 基本上沒有人的周期是正好24小時的
We are usually either somewhere between 23 and 25.
大多數人都是23到25小時之間
So for people whose circadian rhythm is 23 hours, they get very tired at night.
對于周期是23小時的人來說 他們到了晚上就會非常疲勞
But then they wake up very fresh in the morning.
但是他們早上卻會精神抖擻地起來
Or people who are closer to 25 need that extra sleep in the morning.
那些周期是25小時的人 早上需要多睡一會
And it's for those people that I have this class at 11:30.
就是因為那些人我才將這課調到11點半
I know it's early but thank you for making the effort.
我知道是很早但是感謝你們的到來
When I got to college, most students were studying late at night.
我上大學的時候 大多數人都學到很晚

My roommates were studying late at night, starting at about 10 and going to you know midnight or 2 am in the morning.
我的室友就學到很晚 從晚上10點開始然后學到12點甚至凌晨2點
And that's when they are most productive. I wasn't.
這才是他們最有效率的時候 可我不是
And I would get up in the morning and I was tired, exhausted, couldn't really focus at night.
我寧愿早上早點起來 我在晚上會很累 根本無法集中精神
And when I heard about this productive hour, I changed my day. And I went to sleep early.
我聽說了這樣的效率時段后 我改變了作息 我早早睡覺
So when my roommates started to study, I actually went to bed,
在我的室友開始學習的時候 我上床睡覺
and got up really early when my roommates were still asleep and got my work done
然后在我的室友還在睡的時候起床
early in the morning, and then went to my 11 am class after I got my work done.
然后在早上早早地把工作完成 做完以后去上11點的課
And in 3 hours in the morning, I got much more done-more productive, more creative,
在早上的那3個小時內我完成了更多東西 更有效率更有創造性
much better retention than I did late at the night. These two things as I mentioned earlier
比我在晚上熬夜有效率得多了 我剛才說到的那兩樣東西
really changed my experience here-getting so much more in far less time.
真的改變了我在這里的經歷 在更短的時間內學到更多
Not the perfectionist approach, the pursuing excellence approach.
不是完美主義的方式 是追求卓越的方式