The luteal phase (or secretory phase) is the latter phase of the menstrual cycle (in humans and a few other animals) or the estrous cycle (in other placental mammals). It begins with the formation of the corpus luteum and ends in either pregnancy or luteolysis. The main hormone associated with this stage is progesterone, which is significantly higher during the luteal phase than other phases of the cycle. Some sources define the end of the luteal phase to be a distinct "ischemic phase".
Read more about Luteal Phase: Hormonal Events, Luteal Phase Defect
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“The Indians feel that each stage is crucial and that the child should be allowed to dwell in each for the appropriate period of time so that every aspect of his being can evolve, just as a plant evolves in the proper time and sequence of the seasons. Otherwise, the child never has a chance to master himself in any one phase of his life.”
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