It takes about 90 days for sperm production to mature, which varies from person to person. The testes are always producing sperm and the spermatozoa gradually develop and mature under the action of the epididymis, which is divided into three main stages: 1. The spermatogonia proliferate and divide, one spermatogonia can proliferate into 64, called primary spermatocytes. 2. One primary spermatogonia divides into two secondary spermatocytes, but the chromosomes in the nucleus have not replicated. 3. While the cells are dividing, the spermatocytes have gradually moved closer to the The spermatozoa continue to develop in the lumen of the seminiferous tubules for approximately 64 days. The sperm continue to be transported forward to gain motility by being inside the epididymis, which takes about 15 days at this point. Therefore, if a man is planning to have a baby, it is recommended that he prepare three months in advance, take a regular diet and stop smoking and drinking.