51.   The menstrual cycles of fertile women are tracked.

52.   The monthly menstrual cycle is reviewed, and the range of normal and more extreme experiences are discussed.

53.   The reason, he believes, is that the women may be benefiting from hormonal changes associated with their menstrual cycle.

54.   The thickness of the vaginal layer varies with the menstrual cycle and menopause status, Marx said, and premenopausal women naturally produce estrogen and progesterone.

55.   The women continued on their assigned regimens and evaluated their symptoms for the next three menstrual cycles.

56.   The word menopause means a pause, or cessation, of the menstrual cycle.

57.   Then we have a new scientific study that found women subconsciously change their mating strategies during their menstrual cycles.

58.   They attach themselves surgically to daddy while marrying nerds and joking about their menstrual cycles -- stirring a drop of sexism into this insipid brew.

59.   Therefore, issues such as the menstrual cycle or use of birth control would be mitigated.

60.   They found that sporadic late ovulation was common, and that on almost any day of the menstrual cycle some women were fertile.