“唉,累死我了！”你不管走到哪里,都可能听到这样的感叹。其实,差不多我们每个人都有过类似的体验,只不过程度不同罢了。 看起来颇令人费解。现代科技日新月异,体力劳动日渐减少,然而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:一是体力性疲劳。多见于体力劳动者,乃是繁重的体力劳动或过强的体育运动所造成。此时全身肌肉处于高度紧张状态, “Oh, exhausted me!” You may hear such a sigh no matter where you go. In fact, almost all of us have had similar experiences, but to different degrees. Looks quite puzzling. Modern science and technology with each passing day, manual labor day by day decreasing, but the sense of exertion has become a common feeling of modern people, why? Health care experts will be divided into three types of fatigue: First, physical fatigue. More common in manual workers, but heavy manual labor or excessive physical activity caused. At this point the body muscles in a highly strained state,