1.People wasted 8.4 minutes in online puttering-checking email,Internet surfing,and the like.
…and the like,等等,感觉比and so on高大人点,更书面。
2.Research shows that the chronically sleep-deprived are quite impaired.
3.Do you depend on caffeine and sugar to give you energy spikes?
-a spike in interest rate利率的大幅上调
spike 尖状物;激增
4.关于睡眠,作者给的建议
Using a clear rule,instead of "feeling sleepy".
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