In other states, a certain number of years of marriage will cause a prenuptial agreement to lapse. In states that have adopted the UPAA (Uniform Premarital Agreement Act), no sunset provision is provided by statute, but one could be privately contracted for. Note that states have different versions of the UPAA.
Some believe that some association can be learned more easily than other associations learned through classical conditioning, this is called biological preparedness. It is believed that these learned associations are evolutionary important in order increase chances of survival of individuals and the species.
What is natural family planning (NFP)? NFP is a way of following Gods plan for achieving and/or avoiding pregnancy. It consists of ways to achieve or to avoid pregnancy using the physical means that God has built into human nature. NFP consists of two distinct forms: Ecological breastfeeding.