Why when I masturbate I expel less semen than when I have sex?

In most cases, men have masturbated and may cause some misunderstanding the fact that being with a woman they notice differently the time they last ejaculating. The amount of semen you expel in each ejaculation depends on the time you have spent without having sex or without masturbating, as well as the degree of excitement. Surely, when you are with a woman you get more excited than when you self-eroticize. When you get more excited, you send a greater amount of blood to your pelvic area, which allows the pubococcygeal muscles (responsible for giving the ejaculatory shot) to be more toned and send a greater amount of semen to the outside.

In fact, you never "empty", men are machines that produce this liquid. The difference is that sometimes you have more strength than in others to get more milliliters. The average is between 3ml and 5ml for each ejaculation, this for a physically healthy man, if you can go to a clinic and make a sperm count and you certify it.

This usually happens because the feeling is completely different from what happens during sex, sensitive receptors understand that you are not engaged in sex and Masturbation. this is why less sperm is released