Ma'anar: Wasu yara masu jima'i da ke da jima'i da wasu yara masu jima'i, waɗanda aka sanya su namiji a lokacin haihuwa, za a iya rarraba su ko kuma su gane kansu a matsayin 'yan mata. Jikin' yan mata suna fuskantar canje-canje a hankali a lokacin balaga. Balaga shine tsarin canje-canje na jiki wanda jikin yaro ya balaga a cikin jikin mutum mai iya yin jima'i don ba da damar haifuwa. Ana fara shi ta hanyar sigina na hormonal daga kwakwalwa zuwa gonads. Dangane da sigina, gonads suna samar da hormones wanda ke motsa libido da girma, aiki, da canji na kwakwalwa, kasusuwa, tsoka, jini, gashi, fata, ƙirji, da gabobin jima'i. Girman jiki da nauyin jiki yana ƙaruwa a farkon rabin balaga kuma lokacin da yaron ya kammala kafin balaga.
tsakanin 12 da 13