Actually Niki, I looked it up on the Internet a few minutes ago. And i’ve read that the men produce roughly equal numbers of x and y sperm. I’ve read different theories on the x and y sperms such as the x sperm lives longer whereas the y sperm swims faster…and an acidic female environment is more likely to attract an x sperm whereas an alkaline environment is more conducive to a y sperm (this pertains to female diet). There are various theories on how to increase your chances of having either a male or female child.