How does one learn to stimulate ovulation? Often by oneself, when there is no opportunity to benefit from a mentor’s experience. But options abound regarding the evaluation strategy, protocol design, gonadotropin preparations, posology, treatment duration, and when and how to trigger ovulation. Proper, safe stimulation requires critical anticipation of ovarian reactions. There seems to be little evidence-based consensus in the field of ovarian stimulation. Though they all fac