How High Can You Jump?
Flea trainers have observed a predictable and strange habit of fleas while training them. Fleas are trained by putting them in a cardboard box with a top on it. The fleas will jump up and hit the top of the cardboard box over and over and over again.
As you watch them jump and hit the lid, something very interesting becomes obvious. The fleas continue to jump, but they are no longer jumping high enough to hit the top. Apparently, Excedrin headache 1738 forces them to limit the height of their jump.
When you take off the lid, the fleas continue to jump, but they will not jump out of the box. They won't jump out because they can't jump out. Why? The reason is simple. They have conditioned themselves to jump just so high.
Once they have conditioned themselves to jump just so high, that's all they can do!
Many times, people do the same thing. They restrict themselves and never reach their potential. Just like the fleas, they fail to jump higher, thinking they are doing all they can do.
中文：
跳蚤训练人在训练跳蚤时发现跳蚤有一个奇怪的习惯。若把跳蚤放在一个有顶盖的盒子里，他们会不断地跳起来，撞击顶盖。
你观察他们跳起来撞击顶盖，会慢慢发现一个有趣的现象。他们仍会跳起来，但不会再撞到顶盖。
当你把顶盖拿开时，跳蚤还会接着跳，但却不会跳出盒子。为什么呢？原因很简单。它们已经习惯了只跳那么高。
一旦它们习惯只跳这么高之后，它们就只能跳这么高了。
很多时候，人们也是一样。他们自己限制了自己，从来不去发掘自己的潜力。就像跳蚤一样，没能跳得更高，还以为已经到了自己能力的极限。
相关单词：flea
flea解释：n.跳蚤
flea例句：
I'll put a flea in his ear if he bothers me once more.如果他再来打扰的话，我就要对他不客气了。
Hunter has an interest in prowling around a flea market.亨特对逛跳蚤市场很感兴趣。
相关单词：fleas
fleas解释：n.跳蚤( flea的名词复数 )；爱财如命；没好气地（拒绝某人的要求）
fleas例句：
The dog has fleas. 这条狗有跳蚤。
Nothing must be done hastily but killing of fleas. 除非要捉跳蚤，做事不可匆忙。 来自《简明英汉词典》
相关单词：apparently
apparently解释：adv.显然地；表面上，似乎
apparently例句：
An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
