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But, there is a lot of variation in cycle length, both between people, and for one person from one month to another. Graphic: The graphic shows five rows of small squares, each row。

Menstruation is driven by horcyklus variationmones. Hormones are chemical messengers in your body. Your pituitary gland (in your brain) and your ovaries (part of your reproductive system) make and。

The remaining 77 people would have regular cycles, but there is still a lot of variation in median cycle length difference. Graphic: All 100 circles are shown on the x-axis in a quantile dot plot.。

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