Why is it so hard to finish the last mile of a marathon?

Marathon: Most of the enerygy has been used up in the miles before the last one. Therefore, one would have less enerygy at the last mile. Sometimes, the last mile seems elongated because of exhaustion.

Birth: Well, things like this cannot be rushed. It is a process that takes a certain period of time. If birth were to be rush, there may be some extreme issues present.

Giving birth: Haha. What do you expect? Do you want a woman's vagina to be huge? Come on, a small human being being pushed through a small hole?

Baby chick: Baby chicks do not have that much strength to blow out of the shell in one peck. They were just formed. Besides, a shell is considered to be a hard protective coating.

Violence: Human nature. There is evil and sin every where. There are many factors as to why the world is so violent. Some of them are past history, cultural differences, contradicting religion, etc.

Death: I beg to differ. We human beings are fragile. We can actually die very easily. Some deaths come later due to the person's spirit.

this is the only own objective i've got not achieved. Now i be responsive to i could not end a marathon. Twenty six miles and a few hundred yards greater is an rather long-term. i think of i might drop lifeless on the halfway element.