So, instead of using other alternatives to relieve stress why not use sex with your one and only instead, it. The reason for this really is why these adjustments to diet also change or get a new woman's vaginal environment and PH. If that environment is alkaline, it's more friendly towards the Y or boy producing sperm. If it's acidic, it is quite tough on those self same Y sperm but friendly for the X's (or those that produce girl babies.)