Basal Body Temperature (BBT)

Basal Body Temperature (BBT)
Basal Body temperatue is your temperature at rest upon waking in the morning, without the influence of 
physical activity or stress. Taking your temperature in the morning upon waking is the most relibale way 
to record temps for charting purposes. Temperatures can fluctuate during the day depending on the 
amount of activity, stress levels and outside temperatures, making day-time temp taking an unreliable 
form for charting. In order to get an accurate chart reading over the whole cycle it is recommended to 
take your BBT after at least 3-4 hours of sleep, at the same time each morning and without getting out 
of bed. Temperatures will typically increase by about 0.11 degrees Celcius each hour, taking your 
temperature at irregular times may lead to an inacurate chart interpretation.