Healthy looking sperm

A pronounced yellow or green colour may indicate a sexually transmitted infection STI. But there's one exception: the Y chromosome has no counterpart within the egg's DNA, so it's passed along essentially unchanged from father to son. Using salt to fight cancer. Of course, what sperm lack in size they more than make up in sheer numbers. Male masturbation: how to masturbate. But there is a lot you can do before that, to increase the chance of having a healthy pregnancy and a healthy baby, when the time is right.