“唉,累死我了!”在日常生活中,我们常常听到许多人发出这样的感叹。现代科技日新月异,体力劳动日渐减少,为什么劳累感却又成为现代人的普遍感觉,原因何在?保健专家将劳累分为三种类型:体力性疲劳多见于体力劳动者,是因繁重的体力劳动或过强的体育运动造成的。此时全身肌肉处于高度紧张状态,产生大量代谢废物(如乳酸、疲劳毒素等)堆积于体内,并随血液循环到达全身(包括大脑)。表现为手脚酸软无力,体能明显下降。脑力性疲劳主要见于脑力劳动者,由于长时期进行复杂的脑力劳动,大量消耗能量,导致大脑血液和氧气供应不足,削弱了脑细胞的正常功能。表现为头昏脑胀,记忆力下降,注意力涣散,失眠多梦等。 “Oh, I am exhausted! ” In everyday life, we often hear many people make such a sigh. Modern science and technology with each passing day, decreasing manual labor, and why the sense of exertion has become a common feeling of modern people, why? Health care professionals will be divided into three types of fatigue: physical fatigue more common in manual workers, due to heavy manual labor or Too strong sports caused. At this moment, the whole body muscles are in a state of high tension, resulting in a large amount of metabolic waste (such as lactic acid, fatigue toxins, etc.) accumulated in the body and reached the whole body (including the brain) with blood circulation. Manifested as palpability, physical ability decreased significantly. Mental fatigue is mainly seen in mental workers, due to a long period of complex mental work, consume a lot of energy, leading to cerebral blood and oxygen supply, weakening the normal function of brain cells. The performance of dizziness, memory loss, distraction, insomnia and more dreams.