Human: The World Within (人类：体内的世界)

纪录片,也有种大片的节奏,又有种励志片的节奏,又有种教育片的节奏,真的能学到了不少东西,感谢.

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Risk is something that people try to shut out in their lives.And I think to live life fully, to experience all that life has to give,that what you have to do is minimize the risk.by getting lexperience and making good decisions.

Everything is a balance.

If you don't need a strong heart,your body won't give you one .If you don't need strong muscles, why would your body make one?

So it's, in a way, like, if you don't use it, you lose it.But if you use it, you get it

a lot of the injury to the heart is potentially reversible.The heart does tend to self-correct.

So,when our emotional states return to normmalb,the heart itself can also return to normal

with the complex social behavior of humans:oxytocin, often called"the love hormone."