15 Facts About The Human Body! - National Geographic Kids

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Cool things about our bodies… · 1. Your mouth produces about one litre of saliva each day! · 2. Your brain is sometimes more active when you're asleep than when ... MOSTPOPULAR Seeall ADVERTISEMENT 15FactsAboutTheHumanBody! Coolthingsaboutourbodies… Right,gang,it’stimetotakealookathowamazing(andabitfreaky!)weallare!Checkoutthese15fascinatingfactsaboutourbodies… 1.Yourmouthproducesaboutonelitreofsalivaeachday! 2.Yourbrainissometimesmoreactivewhenyou’reasleepthanwhenyou’reawake. 3.Laidendtoend,anadult’sbloodvesselscouldcircleEarth’sequatorfourtimes! 4.Theword“muscle”comesfromLatintermmeaning“littlemouse“,whichiswhatAncientRomansthoughtflexedbicepmusclesresembled. 5.Bodiesgiveoffatinyamountoflightthat’stooweakfortheeyetosee. 6.Theaveragepersonhas67differentspeciesofbacteriaintheirbellybutton. 7.Youloseabout4kgofskincellseveryyear! 8.Babiesdon’tshedtearsuntilthey’reatleastonemonthold. 9.Informationzoomsalongnervesatabout400kmph! 10.Thehumanheartbeatsmorethanthreebilliontimesinanaveragelifespan.   DidyouknowwehaveaFREEdownloadableprimaryresourceaboutthehumanheart? Greatforteachers,homeschoolersandparentsalike! 11.Yourleftlungisabout10percentsmallerthanyourrightone. 12.Humanteetharejustasstrongassharkteeth. 13.Scientistsestimatethatthenosecanrecogniseatrilliondifferentscents! 14.Humansaretheonlyspeciesknowntoblush. 15.Yourbloodmakesupabouteightpercentofyourbodyweight. 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