Basal body temperature

In the daily rhythm of the human body is subject to periodic temperature fluctuations. During sleep raises a temperature minimum (the base ), the basal body temperature is called.

In practice, the wake-up is often called the basal body temperature. This shows quite reliable at the stages of a woman's menstrual cycle and is therefore important for methods of natural family planning as the Symptothermal method or the temperature method. An increase in basal body temperature over a period of more than 18 days is also considered as a probable pregnancy sign.

To measure the basal body temperature special basal thermometer can be used. However, it can also be measured with conventional thermometers.