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1、SwimmingIntroductiontoswimmingWhataretheswimmingstrokes?1.Breaststroke（蛙泳）2.Butterfly（蝶泳）3.Backstroke（仰泳）4.Crawl(freestyle)（自由泳）Whatarethebenefitsofswimming?1.Lowimpact2.Buildscardiorespiratory（心肺的）fitnessandmusclemass3.It'sabreakfromthesummerheat4.BurnscaloriesSummaryIntroductionto swimmin
2、gbackWhataretheswimmingstrokes?Breaststroke（蛙泳）Butterfly（蝶泳）Backstroke（仰泳）Crawl(freestyle)（自由泳）backWhatarethebenefitsofswimming?1.Lowimpact2.Buildscardiorespiratory（心肺的)fitnessandmusclemass3.It'sabreakfromthesummerheat4.BurnscaloriesbackSummarySwimmingisanactivitythatbuildsstrength,enduranc
3、e,andmuscletone.It'sanactivitythatyoucandoallyearlong,insideoroutside,itburnslotsofcalories,youcanshareitwithyourfamily,it'slow-impact,andyoucandoituntilyou're100!It'snottoolatetostartifyouneverlearnedhow(learningnewstuffiscoolevenwhenyou'readult!),andforthoseofyouwhocanswimandwouldliketoco
4、mpete,that'savailableaswell.Allinall,swimmingisawinner,andifyouhavetheinclination（爱好）,Isuggestthatyougoforit!Thankyou!BreaststrokeThelegkick:Bringthekneestochest.Thrustthelegsbackwardandstraight.Snapthelegstogethertopushthewaterandpropelyouforward(frogkick).Thearmstroke:Startwiththearmsover
5、head.Pullonthewater,andbringarmstowardthechest.Keepthehandscupped.Returnarmstostartingposition.Thebreathing:Breatheeverytimeyoustrokewithyourarms.BreaststrokebackButterflyThelegkick:Bendthekneesslightly,andkeepthemtogether.Makeadownwardthrustbystraighteningthekneesandwhippingthefeetdownward
6、.Thereshouldbetwokicksforeveryarmstroke.Thearmstroke:Movethearmstogether,andpullthroughthewaterwiththehandscupped.Facethepalmsoutward,andpressdownandoutward.Swingthearmsforwardabovethewaterinasweepingmotiontocompletethestroke.Thebreathing:Breatheattheendofthearmstroke.ButterflybackBackstrok
7、eThelegkick:It'saflutterkickwherethelegskickinanalternatingorder.Bendthekneesslightly.Relaxthefeetandankles(theyshouldbealmostfloppy).Emphasizetheup-kickforpropulsion.Thearmstroke:Movethearmsinanalternating,windmillpatternastheyrotateandpassyourface.Cupt
