We learn many things from glow. Thanks for great help. Actually, we do learning about body basal temprature (BBT) and Cervical Mucus (CM). Since every woman has different menstrual cycle, BBT really useful to learn body sign, for example when you're ovulating your BBT should lower than your usual body temp. CM gives another supporting sign, when you're ovulating, CM amount would be heavy and sticky. Thanks for great help along :)