A zoologist Tatuo Motokawa said that all mammals except human are dead when their heart beat about one billion and five millions times. (http://www.athome-academy.jp/archive/biology/0000000104_all.html)
It corresponds to 26years for us.
We human beings as wild animal had only 26 years and our average life expectancy is 80 years.
What can I do in the rest 50 years?
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