说“疲劳”或“疲劳了”,通常是凭感觉而说的,其含义可以指各种情况:如长时间运动,感到有些烦了,不想再动了,长时间工作,效率低了;或长时间用脑思考,连续学习,也会使人感到疲劳。 疲劳,在某种意义上讲,也可以说是向人敲起警钟,即警告人们:“不要再干了,否则会伤身体。”当然,这时身体内也可能发生了种种生理功能变化,从而引起了疲劳。 正如上述,疲劳是一种模糊的感觉,其内容,生发的情况有种种类别,如精神疲劳和身体(肉体)疲劳,正常疲劳和积蓄疲劳,全身疲劳和局部疲劳,急性疲劳和慢性疲劳。本文只想对以运动 To say “tired” or “tired” is usually based on feeling. Its meaning can refer to various situations. For example, if you are exercising over a long period of time, you feel tired, do not want to move again, work long hours, and are inefficient; or Long brain thinking, continuous learning, but also people feel tired. Fatigue, in a sense, can also be called a wake-up call to warn people: “Do not do it again, otherwise it will hurt the body.” Of course, when the body may also have a variety of physiological changes, Thus causing fatigue. As mentioned above, fatigue is a vague feeling. Its contents and germinal conditions include various types such as mental fatigue and physical (physical) fatigue, normal fatigue and accumulated fatigue, general and local fatigue, acute fatigue and chronic fatigue. This article just want to exercise