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6. Rhythm Method
The rhythm method is a type of natural birth control that is effective about 76 percent of the time. To use this method, you have to track your menstrual history, so that you can essentially predict when you are going to ovulate. You need to keep meticulous records to get the most benefit from this method. You will need to know your longest and shortest menstrual cycles, and how long your last six cycles were. This information tells you when your fertile days will be. Every month, you should update your calculations to ensure the greatest accuracy.
