现代科学研究结果表明:笑能促进身心健康,是最廉价的灵丹妙药。笑一笑,似做操笑是一种连续性的张口呼吸动作,它可形成过度通气。大笑时,气体以每小时100公里的速度向外呼出,将大量二氧化碳排出体外;同时,反射性地摄入更多的氧气。笑使交感神经兴奋性增高,心跳节律加快,心肌收缩增强,血液循环加速,并 Modern scientific research shows that: Laughter can promote physical and mental health, is the cheapest magic bullet. A smile, it seems like laughing is a continuous mouth breathing action, it can form hyperventilation. Laughing, the gas exhaled outward at a rate of 100 kilometers per hour, expelling a large amount of carbon dioxide; at the same time, refreshed more oxygen. Laughter makes the sympathetic excitability increased, faster heart rhythm, increased myocardial contractility, accelerated blood circulation, and