Tambayar ita ce: "A jariri, wannan zai iya kai kashi 75 bisa ɗari na nauyin jikinsa, amma yana raguwa a hankali daga haihuwa zuwa tsufa, yawancin raguwar yana faruwa ne a cikin shekaru 10 na farko na rayuwa"? Batun shi ne ruwa na jiki.
"Mene ne yawan ruwa a cikin jiki?"