听说久坐不健康，那久坐到底为什么不健康?
<p><span word="Sitting">Sitting</span> <span word="is">is</span> <span word="such">such</span> <span word="a">a</span> <span word="paradox">paradox</span>. <span word="After">After</span> <span word="a">a</span> <span word="long">long</span> <span word="day">day</span>, <span word="you">you</span> <span word="relish">relish</span> <span word="the">the</span> <span word="opportunity">opportunity</span> <span word="to">to</span> <span word="plop">plop</span> <span word="down">down</span> <span word="on">on</span> <span word="the">the</span> <span word="couch">couch</span> <span word="and">and</span> <span word="settle">settle</span> <span word="in">in</span> <span word="for">for</span> <span word="the">the</span> <span word="evening">evening</span>. <span word="But">But</span> <span word="cozy">cozy</span> <span word="up">up</span> <span word="in">in</span> <span word="that">that</span> <span word="same">same</span> <span word="position">position</span> <span word="all">all</span> <span word="day">day</span> <span word="long">long</span> <span word="and">and</span> <span word="you">you</span> <span word="suffer">suffer</span> <span word="a">a</span> <span word="stiff">stiff</span> <span word="neck">neck</span>, <span word="tight">tight</span> <span word="shoulders">shoulders</span>, <span word="and">and</span> <span word="back">back</span> <span word="pain">pain</span>. <span word="What">What</span> <span word="gives">gives</span>? "<span word="Any">Any</span> <span word="position">position</span> <span word="we">we</span> <span word="hold">hold</span> <span word="for">for</span> <span word="any">any</span> <span word="length">length</span> <span word="of">of</span> <span word="time">time</span> <span word="will">will</span> <span word="eventually">eventually</span> <span word="turn">turn</span> <span word="to">to</span> <span word="pain">pain</span> <span word="because">because</span> <span word="the">the</span> <span word="body">body</span> <span word="is">is</span> <span word="not">not</span> <span word="primed">primed</span> <span word="to">to</span> <span word="do">do</span> <span word="that">that</span>," <span word="said">said</span> <span word="Joan">Joan</span> <span word="Vernikos">Vernikos</span>, <span word="former">former</span> <span word="NASA">NASA</span> <span word="scientist">scientist</span> <span word="a">a</span> "<span word="Most">Most</span> <span word="people">people</span> <span word="are">are</span> <span word="sitting">sitting</span> <span word="six">six</span> <span word="to">to</span> 13 <span word="hours">hours</span> <span word="a">a</span> <span word="day">day</span>. <span word="This">This</span> <span word="immobility">immobility</span> <span word="causes">causes</span> <span word="the">the</span> <span word="illnesses">illnesses</span> <span word="we">we</span> <span word="have">have</span> <span word="come">come</span> <span word="to">to</span> <span word="recognize">recognize</span> <span word="as">as</span> <span word="modern">modern</span> <span word="disorders">disorders</span>, <span word="like">like</span> <span word="diabetes">diabetes</span>, <span word="obesity">obesity</span>, <span word="cancers">cancers</span>, <span word="heart">heart</span> <span word="conditions">conditions</span>, <span word="and">and</span> <span word="loss">loss</span> <span word="in">in</span> <span word="blood">blood</span> <span word="volume">volume</span>," <span word="she">she</span> <span word="said">said</span>.</p><p>坐着也会让人又爱又恨。度过漫长的一天，你抓住机会扑通一声瘫坐在沙发上，然后就这么着度过一夜晚。纵然是这样保持同一个看似舒适的姿势一天，你也会感觉到，脖子僵硬，肩膀紧绷，背部酸痛，怎么会这样？我们长时间保持一个姿势，不管是什么姿势最终都会导致不适，因为身体没有准备好这么做。美国航天总署的科学家<span word="Joan">Joan</span> <span word="Vernikos">Vernikos</span>如是说“大部分人每天有6到13个小时都是坐着的，不动也会导致疾病，比如糖尿病，肥胖，癌症，心脏病，血量的减少等现代疾病。”</p>
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