Bari mu fara tare da gabatarwar anatomical. Maza namiji sun kasu kashi biyu:
- tare da saitin X chromosomes;
- tare da saitin Y yuwanin yada.
An haifi 'yan mata daga haɗin X-chromosomes biyu (XX), kuma yara daga haɗin X da Y (XY). Kamar yadda kake gani, idan kana sha'awar yadda za a haifi ɗa daidai, ya kamata ka tabbatar da matsakaicin iyaka zuwa mahaifa na Y-spermatozoon.
Za mu gano yadda za muyi haka.
Matsayi
X-spermatozoa na rayuwa har zuwa kwanaki 5 a yanayin yanayi na farji daga mace, suna tafiya da hankali kuma sun fi girma - chances na rayuwa sun kasance mafi girma. Y-spermatozoa rayuwa 24 hours, sun kasance karami kuma sauri.
Don haka, a wace alama ce ta haifi jariri, tare da fahimtar abin da ke sama? Matsayi ya kamata ya inganta matsakaicin iyakokin kusa da mahaifa, don haka spermatozoa tare da Y ya "lashe" tseren a cikin X-spermatozoa.
Don yin wannan, dukkanin halayen sun dace, inda matar ta fito daga ƙasa kuma inda mutum zai iya shigar da azzakari a matsayin mai zurfi sosai.
Mafi mashahuri da gwada:
- "Mishan" ya sanya;
- matsayi na "style doggy" - mace tana tsaye a kowane hudu, mutum yana shiga cikin farji daga baya;
- sanya "cokali" - duka abokan tarayya suna kwance a gefen su, mutumin ya shiga daga baya.
Daga ra'ayi na physiology, mata suna bukatar kulawa da yiwuwar lankwasawa na mahaifa :
idan akwai tanƙwara, ƙayyade wace hanya kuma kuyi ƙarya a wannan gefe don ganewa; Idan cervix ya kasance a sama da saba - za ku kusanci matsayi na kafa gwiwa.
Yaushe?
Amma jingina ba cikakkiyar garantin ba ne. Yayin da kake la'akari da yadda za a haifa jaririn yadda ya dace, kula da ranar jima'i.
Ga yadda tunanin yara ya yi ƙauna 24 hours kafin farkon jima'i da kuma sa'o'i 12 bayan yin amfani da ruwa.
Bugu da ƙari, dalilin shine a cikin gajeren rai na Y-spermatozoa, da kuma adana tsawon lokaci na X-spermatozoon a cikin farji. Bugu da ƙari, an bada shawarar aƙalla akalla kwanaki biyu na abstinence abokan tarayya, don haka farjin a lokacin da aka haifa ba shi da ƙananan X-chromosome daga halayen da ta gabata.