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Can a man give birth to a girl if he exercises more? Recently, I want to go to the gym to do exercise and increase muscle lines. But I want to have children this summer.
It's not up to you to have boys and girls! The birth of boys and girls is determined by the chromosome combination in human DNA. There is only one X for women and two X for men, that is, the number of chromosomes of eggs and sperm is half that of somatic cells. At the time of fertilization, the number of chromosomes in the fertilized egg is the combination of female eggs and male sperm, that is, X Y XX xy is male and XX is female. I don't think exercise will change your genes.

Proper exercise only strengthens your body's resistance, so it is not correct to say that more girls exercise!

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