07/22/2015
It's scientific

Nope, Natural Family Planning isn't just the "rhythm method". It's not based on guess work that assumes all women's cycles are the same. Depending on which method you use (Base Body Temp method, Ovulation method, Sympto-Thermal method) NFP is based on some combination of charting body temperatures and cervical mucus. It's a system based on measurements and data tracking.