[thrownaway2424]

You seem very interested in this topic and I applaud your enthusiasm but I still think you are overselling the ease of this method. Basal temperature is tricky to measure and if you have any responsibilities of any kind in the morning you are likely to get the timing wrong or just skip it some days. Certainly those with a child or children already will find even sparing 90 seconds first thing after waking to be difficult. Children are selfish little assholes and aren't interested in your 90 seconds to yourself.

Cervical mucus that you gloss over involves sticking two digits way up your vagina every day and then evaluating the outcome. There's nothing wrong or gross about that but lots of people are unable to treat their own body with the required detachment.

[michaelsbradley]

The focus of my comments has not been on the methods' ease of use. I did write "easy to learn", and I think the research backs up that claim.

I am aware of what is involved in tracking the various signs. Like most any voluntary human routine – exercise, special diet, regular study, etc. – the hardest part is in the beginning, i.e. making the commitment, getting in the habit, sticking to it. How difficult or easy it is to adopt an NFP tracking-routine is going to vary by the woman/couple. If for some women basal temperature and cervical mucus are perceived or prove to be difficult signs to track, for whatever reason, they could look into the Standard Days Method (linked above). Some may prefer that method in the first place.