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Following up on Covid Vaccines' Effect on Menstrual Cycles
Given this first study’s size, and that it only included participants in the US, we decided to follow it up with another, larger, study...
How effective is Natural Cycles when used with the Oura Ring?
The short answer: 93% effective with typical use and 98% effective with perfect use, i.e. the same as if used with a basal thermometer.
Menstrual Cycle Myth-Busting
There are many assumptions about the menstrual cycle, and some of the most common ones are that a regular menstrual cycle is 28 days long, with ovulation happening on day 14 and a 14-day luteal phase.