In daily life, it is recommended to wear looser underwear and pants. In addition, working in a hot environment for a long time may also have certain effects on sperm, such as chefs and smelting workers. The survival of sperm requires a suitable temperature. In general, it takes three months for the sperm to mature, which means that the man’s sperm is metabolized once every three months. If there is yellowish semen, it is not the result of lack of nutrition, it is one of the normal manifestations of semen color. It is recommended to drink more water and urinate more often and try to avoid staying up late. Generally speaking, sperm do not carry out metabolic functions in advance, they stay inside the epididymis for about 19 to 25 days before they can mature further, so it takes longer for sperm to mature and metabolize, sperm are produced in the testicles in a cycle, and the next batch of sperm will be produced only after sperm are discharged. Sperm are produced one after another, but mature sperm are usually found in the epididymis, so you don’t have to worry too much about any reason for early sperm metabolism.