Your basal body temperature (BBT) is your lowest body temperature in a 24-hour period. Basal thermometers are available at most drugstores. The best time to take it is when you first wake up in the morning. Before you even get out of bed to brush your teeth or start your day, pop a basal thermometer into your mouth. It's important to try to wake up and take this reading at about the same time each morning. To do so you can set yourself a reminder in the Reminder Center of Glow Genius. Once you enter your BBT you will be able to see it in Charts Center within Glow Genius.

Basal thermometers are available at most drugstores. Once you enter your BBT you will be able to see it in Charts Center within Glow Genius.