根据圣路易斯华盛顿大学生物力学专家Herman Pontzer的说法，我们之所以要摆臂，是因为不这样的话就需要在意识上以及生理上额外花些气力才能使得手臂保持静止。

We swing our arms simply because it would take extra mental and physical effort to keep them still, says Herman Pontzer, a biomechanics researcher at Washington University in st Louis.

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Sam从来不睡觉（我决定最好不要深入讨论睡眠需要的生理机制，管他有没有灵魂，跟着它走就是了）。

Sam doesn’t sleep ever (I’ve decided it’s best not to get into the physiology of sleep requirements, soul or not, and just go with it).

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不论是自我轻视还是虐待有关的增加的死亡风险不局限于认知或生理机能水平最低下的人群。

Increased mortality risks associated with either self-neglect or abuse was not restricted to those with the lowest levels of cognitive or physical function.

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Well,you can't tell by thinking about the normal case, because the B-functioning and the P-functioning stop at the same time.

这从通常的例子中是研究不出来的，因为生理功能和人格功能同时结束。

耶鲁公开课 - 死亡课程节选

Because it was in the 1950's or so, maybe the late 1940's, that people started to discover lithium, even though it had no natural function, it did do something in our bodies.

因为在二十世纪五十年代左右，可能是四十年代末期，人们开始发现锂，尽管不参与人体的正常生理活动，但是它确实会对我们的身体产生影响。

麻省理工公开课 - 化学原理课程节选

We don't like to believe that physical attractiveness accounts for much in life.

我们不相信,生活中生理吸引力有多重要。

耶鲁公开课 - 心理学导论课程节选