NFP stands for Natural Family Planning. It teaches couples to monitor the signs and symptoms of the woman's body, such as body temperature at the start of the day, to understand and track the different phases of her fertility cycle.

It can be used to avoid pregnancy, it can be used to increase the likelihood of conception, it can be used to help understand and address the root causes of infertility, it can be used to more accurately estimate a pregnant woman's due date, and it provides a barometer of a woman's overall health and hormonal balance.