Breath


입과 폐를 거쳐 피를 통해 산소 세포에 공급





> 숨 한번당 심장 4번 평균적 모든 동물


> [Scientists May Have Found a Way to Inject Oxygen Into The Bloodstream Intravenously](https://www.sciencealert.com/experimental-device-could-intravenously-deliver-oxygen-to-the-bloodstream)





