What do you wonder exactly? Where is the confusion?
Do you not know what ovulation is? Ovulation is the phase of the menstrual cycle when a mature egg is released from the ovary.
Do you not understand what people are? People is an American weekly magazine that specializes in celebrity news and human-interest stories. Okay, I'm being cheeky here.
Or is it that you assume that people can't ovulate? I can assure you, they can. For example: