为什么身体走形之后想还原这么难？
<p><span word="Why">Why</span> <span word="Getting">Getting</span> <span word="Back">Back</span> <span word="in">in</span> <span word="Shape">Shape</span> <span word="is">is</span> <span word="So">So</span> <span word="Hard">Hard</span>?</p><p>为什么身体走形之后想还原这么难?</p><p><span word="Because">Because</span> <span word="muscle">muscle</span> <span word="memory">memory</span> <span word="doesn">doesn</span>'<span word="t">t</span> <span word="last">last</span>.</p><p>因为肌肉记忆不会持续。</p><p><span word="Taking">Taking</span> <span word="a">a</span> <span word="month">month</span> <span word="or">or</span> <span word="two">two</span> <span word="off">off</span> <span word="of">of</span> <span word="regular">regular</span> <span word="exercise">exercise</span> <span word="may">may</span> <span word="not">not</span> <span word="be">be</span> <span word="so">so</span> <span word="benign">benign</span>. <span word="A">A</span> <span word="new">new</span> <span word="small">small</span> <span word="study">study</span> <span word="shows">shows</span> <span word="that">that</span> <span word="when">when</span> <span word="muscles">muscles</span> <span word="take">take</span> <span word="a">a</span> <span word="break">break</span>, <span word="they">they</span> <span word="maintain">maintain</span> <span word="very">very</span> <span word="little">little</span> <span word="muscle">muscle</span> <span word="memory">memory</span> <span word="from">from</span> <span word="the">the</span> <span word="prior">prior</span> <span word="exercise">exercise</span>.</p><p>把平常的规律性运动暂停1到2个月可不是个好习惯。一个新的小研究显示，当肌肉放松时，它只能保持很少之前运动时的记忆。</p><p><span word="The">The</span> <span word="goal">goal</span> <span word="of">of</span> <span word="the">the</span> <span word="new">new</span> <span word="study">study</span>, <span word="published">published</span> <span word="Thursday">Thursday</span> <span word="in">in</span> <span word="the">the</span> <span word="journal">journal</span> <span word="PLOS">PLOS</span> <span word="Genetics">Genetics</span>, <span word="was">was</span> <span word="to">to</span> <span word="gain">gain</span> <span word="a">a</span> <span word="better">better</span> <span word="understanding">understanding</span> <span word="of">of</span> <span word="how">how</span> <span word="exercise">exercise</span> <span word="influences">influences</span> <span word="the">the</span> <span word="body">body</span> <span word="on">on</span> <span word="a">a</span> <span word="genetic">genetic</span> <span word="level">level</span>. <span word="As">As</span> <span word="TIME">TIME</span> <span word="recently">recently</span> <span word="reported">reported</span>, <span word="exercise">exercise</span> <span word="carries">carries</span> <span word="a">a</span> <span word="whole">whole</span> <span word="host">host</span> <span word="of">of</span> <span word="benefits">benefits</span> <span word="for">for</span> <span word="the">the</span> <span word="body">body</span>, <span word="from">from</span> <span word="aging">aging</span> <span word="to">to</span> <span word="brain">brain</span> <span word="health">health</span> <span word="to">to</span> <span word="a">a</span> <span word="stronger">stronger</span> <span word="ability">ability</span> <span word="to">to</span> <span word="fight">fight</span> <span word="infections">infections</span>. <span word="But">But</span> <span word="how">how</span> <span word="that">that</span> <span word="exercise">exercise</span> <span word="translates">translates</span> <span word="to">to</span> <span word="changes">changes</span> <span word="in">in</span> <span word="genetic">genetic</span> <span word="activity">activity</span> <span word="is">is</span> <span word="more">more</span> <span word="unknown">unknown</span>.</p><p>现有一项于星期四在科学公共图书馆基因杂志板块发布的新研究，它的目标是：更好地理解锻炼怎样在基因层面上影响身体。《时代》杂志最近报道，锻炼完对身体大有益处，好处的范围包括延缓衰老、大脑健康、增强抵抗力。不过，这些锻炼究竟是如何影响基因活动的，依旧在很大程度上不为人知。</p><p><span word="In">In</span> <span word="the">the</span> <span word="report">report</span>, 23 <span word="people">people</span> <span word="trained">trained</span> <span word="one">one</span> <span word="of">of</span> <span word="their">their</span> <span word="legs">legs</span> <span word="for">for</span> <span word="three">three</span> <span word="months">months</span> <span word="by">by</span> <span word="kicking">kicking</span> <span word="and">and</span> <span word="pulling">pulling</span> <span word="a">a</span> <span word="bike">bike</span>-<span word="likecontraption">likecontraption</span> 60 <span word="times">times</span> <span word="a">a</span> <span word="minute">minute</span> <span word="for">for</span> 45 <span word="minutes">minutes</span>. <span word="They">They</span> <span word="did">did</span> <span word="this">this</span> <span word="training">training</span> <span word="four">four</span> <span word="times">times</span> <span word="a">a</span> <span word="week">week</span> <span word="for">for</span> <span word="three">three</span> <span word="months">months</span>.</p>
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