What is basal body temperature?
Basal body temperature (BBT) is the lowest body temperature attained during a period of rest, and it’s particularly useful in estimating the day of ovulation. A BBT graph shows ovulation after it has occurred, not before, so you could use Flo's online ovulation calculator to predict when you might ovulate, and your basal body temperature data to confirm it.
To determine the best time for sexual intercourse, log and monitor your BBT for a minimum of two to three menstrual cycles. An ovulation pattern will gradually emerge, allowing you to plan accordingly for the days leading up to the next temperature increase.