Getting busy during that time a monthMany women choose not to have sex with their partner when they're on their period. But should we only be getting down at certain points in our cycle?Having intercourse during your period is proven to help ease menstrual pain, and in some cases, it might even make intercourse more pleasant. The only downside is things can get a little messy.The benefits of period sexBut, there are also other side effects of period sex you should know about. During menstruation, we shed the lining of the uterus, which is meant to accommodate a fertilized egg. When there's no fertilized egg, the body naturally expels the lining through what we all know as period blood.Having sex during your period can shorten the length of your period because the bleeding actually increases after intercourse.During sexual intercourse and more specifically during orgasm, the uterus contracts. These contractions help you release more mucous membranes, thereby eliminating part of that lining.Knowing that having sex can shorten your period makes it a lot easier to give in to temptation, doesn't it?