阅读理解 Passage2 Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrelaxation.Onceyouareinthehabitofrushingthroughlift,beingonthegofrommorningtillnight,itishardtoslowdown.Butrelaxationisessentialforahealthymindandbody. Stressisanaturalpartofeverydayliftandthereisnowaytoavoidit.Infact,itisnotthebadthingitisoftensupposedtobe.Acertainamountofstressisvitaltoprovidemotivationandgivepurposetolife.Itisonlywhenthestressgetsoutofcontrolthatitcanleadtopoorperformanceandillhealth. Theamountofstressapersoncanwithstanddependsverymuchontheindividual.Somepeoplearenotafraid ofstress,andsuchcharactersareobviouslyprimematerialformanagerialresponsibilities.Othersloseheartatthefirstsignsofunusualdifficulties.Whenexposedtostress,inwhateverform,wereactbothchemicallyandphysically.Infactwemakechoicebetween"fight"or"flight"andinmoreprimitivedaysthechoicemadethedifferencebetweenlifeordeath.Thecriseswemeettodayareunlikelytobesoextreme,buthoweverlittlethestress,itinvolvesthesameresponse.Itiswhensuchareactionlastslong,throughcontinuedexposuretostress,thathealthbecomesendangered.Suchseriousconditionsashighbloodpressureandheartdiseasehaveestablishedlinkswithstress.Sincewecannotremovestressfromourlives(itwouldbeunwisetodosoevenifwecould),weneedtofindwaystodealwithit.