早起锻炼 不利于健康

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许多人认为，早睡早起是锻炼身体的好办法。其实早上锻炼并非最好的锻炼时间，甚至有的学者认为早晨锻炼不利 于身体健康。不久前有文章指出，早晨锻炼身体不利于健康，其理由是早晨体育锻炼不利于人体免疫 功能,健尔马足疗机三代。
　　体育锻炼是件好事，但人们存在不少误区，如很多人选择早晨锻炼身体。而科学证明，清晨是心脏病发病的高 峰时间，尤其是在早晨做强度大的活动，使人体的激素分泌量比午后和傍晚都高，心脏被迫加速跳动，干扰交感神 经的平衡，可能使运动者的心脏出现不规则跳动，甚至导致猝死，因此最好选择下午或傍晚锻炼。
　　还有很多人认为，剧烈运动后应立即坐下来休息，但这是不对的。在剧烈运动中人体内会产生大量代谢物质， 在肌肉当中产生大量乳酸，如果此时坐下来休息，乳酸在肌肉里堆积，会出现肌肉无力、酸痛、关节僵硬等症状。 所以运动后应慢走、慢跑,健尔马足疗机生产厂家，让身体过渡到舒缓状态。
　　有关医学专家通过调查，显示许多早晨进行训练的游泳运动员，在一段时间训练之后免疫功能逐步下降。这一 结果引起人们的重视。
　　经观察研究,艾灸棒，他们测试出人们在晨练后体内产生过多的肾上腺皮质激素，体内的皮质激素含量升高。这不仅不能增强体质，还 常常因皮质激素而促使血压升高，同时还会抑制人体正常的免疫功能,红泰昌2017b足浴盆。而傍晚进行身体锻炼就没有这样的后顾之忧，因为皮质激素的含量傍晚明显低于早上。
　　人们在晨练之后，唾液的流动速度将明显减慢。可不能小看唾液的流动速度,健尔马足疗机三代，因为唾液流动可以帮助人们抵抗感染。如果唾液流动速度缓慢，将会使人更容易被病毒感染。
　　由此研究者们得出这样的结论：人们锻炼的最佳时段不是早晨而是傍晚。在这一时段内，人体内的皮质激素含 量最低，而唾液流动速度最高,健尔马足疗机怎么样。看来傍晚锻炼是符合人体健康要求的，锻炼身体，最好在傍晚进行。
　　运动后大量饮水也是不对的。剧烈运动后，人会丢失大量电解质，如果大量喝水，水和电解质会失衡，有人会 觉得头晕甚至肌肉痉挛等，因此应休息一下，喝一些运动饮料及时补充水分和盐分。

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