the x or y theory

the x and y chromosomes have different characteristics and that you can influence the reproductive environment to favor one or the other. it is the sperm that fertilizes the egg that will determine the sex of your baby. some sperm carry the x-chromosome and some sperm carry the y-chromosome. if an x-chromosome-carrying sperm fertilizes the egg, the baby will be a girl. if a y-chromosome-carrying sperm fertilizes the egg, the baby will be a boy. the key idea is how you can control either x- or y-chromosome-carrying sperm will be more likely to fertilize the egg by sexual position and timing.

the y-chromosome-carrying sperm are said to be faster and smaller than the x-chromosome carrying sperm also the y-chromosome-carrying sperm is die faster than the x-chromosome-carrying sperm.

the x-chromosome-carrying sperm are said to be slower than the y-chromosome carrying sperm and it is better able to with stand the acidic cervical environment before fertile cervical fluid is produced.

Based on these premises, you can time intercourse, choose a sexual position that favors conception of your preferred sex and influence the reproductive environment to increase the likelihood of conceiving your preferred sex.

to get a boy:

• time intercourse as close to ovulation as possible: the idea is that since the y-chromosome sperm are faster than the x-chromosome sperm, there will be more x-chromosome sperm who reach the egg, making it more likely that a x-chromosome carrying sperm will fertilize the egg.
• abstain from intercourse for four to five days prior to ovulation. have intercourse only just at the time of ovulation and just before.
• have intercourse that allows for deep penetration. the expert recommends rear-entry (aka, “doggy-style”). the idea is that the sperm will be deposited closer to the cervix where cervical fluid is most friendly to the y-chromosome sperm and where the “boy sperm” are more likely to survive since there is less distance to travel.
• men avoid tight clothes: heat kills off both types of sperm, but will kill off the less protected, smaller y-chromosome sperm faster.
• women have an orgasm: female orgasm increases the alkaline secretions in the vagina that are favorable to the y-chromosome carrying sperm. so it will be good for female to have an orgasm before or at the same time as the male partner.

to get a girl:

• have intercourse 2-3 days before ovulation and avoid intercourse just before ovulation until 2 days after ovulation and when you have peak cervical fluid: the idea is that when you have sex a few days before ovulation, only the x-chromosome “girl sperm” will be left in the female reproductive tract waiting to fertilize the egg when it is released.
• have intercourse with shallow penetration: recommends “missionary position”or any position that will deposit the sperm slightly away from the cervix, giving advantage to the longer living, but slower x-chromosome-carrying sperm.
• women avoid orgasm: suggests women avoid orgasm because it makes the vaginal environment more alkaline, and less acidic and is disadvantageous to the x-chromosome “girl sperm”.

happy trying!