Conventional wisdom for couples trying to conceive is the sex that's happening while the woman is ovulating is the sex that counts. But a recent study from the Kinsey Institute at Indiana University suggests that more frequent sex during other parts of the menstrual cycle may increase the likelihood of conception, because it changes the way a woman's immune system reacts to sperm. The Indianapolis Star reports.
IU sex study sheds light on how immune system allows conception to occur
