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人的体温并不是一个固定的值,而是一个温度范围。在正常的生理条件下,体温可随昼夜、性别、年龄、环境温度等情况而改变。那体温会随运动强度的变化而发生改变吗?晓东在家里利用体温计、跑步机等器材进行了下述实验:

Ⅰ.晓东在跑步机上快走10分钟后,用体温计测量腋下温度为37.2℃;

Ⅱ.休息30分钟后,晓东在跑步机上快跑10分钟,再用体温计测量腋下温度为37.5℃;

根据以上两个实验,晓东得出:人的体温变化受运动强度的影响,随着运动强度的增

大而增加。

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       “Our aim is to take our art to the world and make people understand what it is to move,” said David Belle, the co-founder of parkour(跑酷).

      Do you love running? It is a good exercise, yet many people find it boring. But what if making your morning jog a creative one? Like jumping from walls and over gaps and ground rolls? Just like the James Bond in the movieCasino Royale? Bond jumps down from a roof to a windowsill and then runs several blocks over obstacles on the way. It is just because of Bond's wonderful performance that the sport has become popular worldwide.

      Parkour is an extreme street sport aimed at moving from one point to another as quickly as possible, getting over all the obstacles in the path using only the abilities of the human body. Parkour runners dash around the city, they may jump over fences, run up walls and even move from rooftop to rooftop.

      Parkour can be just as exciting and charming as it sounds, but its runners see parkour much more than that. Overcoming all the obstacles on the course and in life is part of the philosophy(哲理)behind parkour. You must determine(决定) your destination, go straight, and jump over all the barriers as if in parkour and never fall back from them in your life, to reach your destination successfully. Another philosophy we've learned from parkour is freedom. It can be done by anyone, anytime, anywhere in the world. It's a kind of expression of trust in yourself that you earn energy and confidence.