Additionally, during her ovulation period, a woman will have a higher libido (sexual desire) than the rest of the days. If she "listens" to her body, a woman can actually guess pretty well when she is about to ovulate. Also, even if human ovulation seems to be concealed, studies have shown that men can subconsciously detect it and are more interested in that particular woman during those days due to the hormones she secretes (because she is at her fertile stage).