"One of the languages the human body “speaks” is the language of love, spoken in a unique way by the sexual powers. At its core, Natural Family Planning (NFP) is really learning about this language of the sexual powers by observing, recording and interpreting the bodily signs of human fertility. In other words, NFP is fertility awareness, the knowledge of a couple’s fertility, and is a means of reading the body’s signs of fertility and infertility. Applying this knowledge through the Sympto-Thermal Method (STM) of NFP, which CCL teaches, is over 99% effective in postponing pregnancy." ~ ccli.org
Read about one couple's experience with NFP.