2000 for years science of people his mind that puzzles a issue. this on new a theory, discussions end could is it?? fatigue, sıkılma what if also a someone else esnerken see yawn reasons between considered. well, yawn our body how a function see? this on with research known maryland from the university psychologist robert provine 1980'lerde works first starts esnemeyi "about fewest information owner be most widespread human behavior" describe as was making. between passed 30 per year maybe a response more extremely we approached; but experts between perspective separation continuing. esnemeyle related first research 2500 year ago greek doctor hippocrates done and esnemenin specially hot a disease during in the body bad air cleaning assistant where as a result he has. this perspective 19. century until dominance preserved. this in the century residual science people esnemenin breath buy assistant where, body karbondioksitin thrown bleed more extremely oxygen entering the provides that he believes. provine if voluntary deneklerine various gas mixtures soluttuğunda a change i see. many theory more extremely esnemenin interesting existing infectious feature on he stands. provine, "the counter someone esnediğinde people percent 50'sinin also esneyerek response give" indicate. "so infectious but someone esnediğini see, to hear, even just about that read even yawn action tetiklemeye is enough," says. esneyerek communicate this from property because of some experts esnemenin primitive a communication form whether not worry do started. if so if esneyerek what to be told he asked? usually tired we are esnediğimiz for some people this send everyone's biological time same ayara bring function see it might be claim did. bern from the university christian hess also this the idea: "esnemenin a social group's behavior synchronous the hair, for example everyone's same time uyumasını supply like a signal function possible," says. thus day after group members very more efficient can work. but stressful be time also esneriz. athletes race previously, musicians concert previously abundantly esner. thereof provine also be included about many expert esnemenin brain refreshing a function be, sleep çöktüğünde alertness, attention dağıldığında again collection provides that believe. group in the spread also everybody same attention the level progress, thus for example not any to the danger against more alert state come on possible going on. french researcher olivier walusiski if brain around spinal cord sıvısının pompalanması through nerve cells more active state come from in opinion. brain serinletmek near in time if all this opinion differences and head the confusion end expense hoping new york from the university andrew gallup new a theory developed. gallup'a according to yawn through indeed beynimizi extreme ısınmaktan we maintain. çenenin violently open the blood the skull circulation by providing extreme temperature dealing, yawn during gotten deep nefesle sinus boşluklarına snag weather if brain serinletiyor. gallup this theory sınamak for people different temperatures esnerken examined. normal conditions people percent 48'i esnemiş, but deneklerden to head cold a cloth bastırmaları when asked this rate percent 9'a he fell. more effective existing thing if the nose solumaktı. this send brain cools, yawn request center kalkıyordu. this theory supporting a development done. gallup research published after short awhile after, sometimes a hour duration yawn crisis incoming two woman it admitted. women someone cure as yourself cold waterlogged küvete the horse he says. gallup them, yawn crisis from arrived ago and then the mouth a thermometer put body ısılarını ölçmelerini want. measurements, esnemeden ago body ısısında low a rise that and heat again 37 degree thoughts until esnemenin continuation do showed. yawn, sneeze, sex connection body ısımız sleep ago and then some increases. this situation that moments why esnediğimizin statement possible. brain some serinletmek our attention further yoğunlaştırmamızı can provide. bored dikkatimiz dağıldığında thereof esniyor we can. but gallup'un theory about that survey doing everybody satisfaction didn't. some people its enough experimental data provide that, some people direct human the brain heat ölçmediğini claiming. provine if this theory more favorably ministers. but gallup'un theory some things explain to also still yanıtlanmayı expectant else questions also there. for example mother in your stomach fetüs why esniyor possible? provine infants esnemenin yetişkinlerden more crucial role that play, akciğerlerinin development assistant be believe. provine also esnemenin sneeze and sex with also paralellikler showed, every someone a climbing and at last relief situation that contain, a time started is end vardırma güdüsü move it and these between nerve cells operation with respect to partner a side it might be indicate. this article english the original bbc future'da you can read it. the magazine other makalelere from here you can reach.