Is in attendance any course to increase the probability of have a boy over have a girl?

Me and my husband want boys over girls and are wondering if there is a proven method to ensure we have a boy?
old sperm will produce a girl (xx)
fresh sperm day 15/16 a boy (xy)
so enjoy sex during your period and youll almost always get a boy!
There's no proven method but ppl say that you should have sex on the day of ovulation and not 1 or 2 days previously. Male sperm doesn't survive as a long as female sperm so if you have sex on your exact day of ovulation, they own a better chance of swimming faster and getting the the "prize" first.
Answers:    My gynae has conducted and be involved in several studies on this matter, and written a book about it.

Firstly, someone answered have sex on your period - completely wrong, you need to have sex when you are ovulating, which is the middle of your cycle (beginning person the first day of your period).

The gender of baby is determined by the sperm - your egg is xx, which is feminine. Sperm is either xx, which is also female, or xy which is male.Studies show that the feminine sperm (xx) travel slowly, but have a longer lifespan than male sperm by 2 to 3 days. Male sperm (xy) travel more quickly, but hold a shorter lifespan. So it's kind of a case of the tortoise and the hare!

In order to concieve a girl, you should hold sex 2 to 3 days before ovulation - theory behind this is the mannish sperm will rush through, only to find the egg isn't there, and they will die before it arrives. Then, the slower and longer living feminine sperm will reach it just in time.

By indistinguishable theory, if you are trying to concieve a boy, you should have sex during ovulation, so that when the male sperm return with there, the egg is waiting, and the slower female sperm will be too late. Some relations say positions with deeper penetration and lay with your legs in the air after sex help the male sperm get there quicker,but I'm not so sure on that myself!

Either style, there are so many people who are incompetent to have children, if you get pregnant at all, be it boy or girl, you should consider yourselves certainly blessed.
some ppl say-so eating sea food helps

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