Natural family planning with our digital cycle thermometer for determination of the time of ovulation. Chart your Basal Body Temperature & predict ovulation - your most fertile time of the month to conceive a baby! (Free BBT Chart provided).
When a woman ovulates, a rise in body temperature takes place in order to provide a more fertile environment for conception. By monitoring when this temperature change occurs, you can determine when ovulation takes place in your cycle.
Basal temperature is the lowest normal body temperature of a person immediately upon awakening in the morning - BEFORE you get up, move around, eat, drink, smoke, talk - if possible, while you are still "half asleep". The best reading of your basal temperature can be taken at the same time every morning when you first awake.