What should I pay attention to when measuring basal body temperature? 1, the best application of mercury column thermometer, preferably the same one not more than one. 2, before going to bed to dump the thermometer to a low point, placed in the morning easy to take place. 3, regular rest and rest, usually sleep more than 6-8 hours. 4.Don’t get up and move around after waking up in the morning, put it under the tongue for 5 minutes. 5, cold, alcohol, late sleep, insomnia will affect the body temperature, mark yourself well. Basal body temperature chart – the easiest and most practical way to know yourself Basal body temperature is the body temperature of the organism in the resting state. Therefore, it needs to be taken when you sleep for more than 6-8 hours without getting up, eating and drinking, or talking. When you wake up every morning, the first thing you should do is to take the mercury column thermometer, hold it under your tongue for 5 minutes, and then record the temperature on the thermometer. The basal body temperature should be taken without interruption for at least one cycle (from the first day of the period to the day before the next period). Connect each point with a line to make a temperature curve of your own. There are many software programs available, so you can download one and put it in your phone. Generally, during the first half of the menstrual cycle, the body temperature often remains at a low level, called the hypothermic period. After ovulation, the body temperature reaches a high temperature plateau after 2-3 days, called the high temperature period. These two plateaus presented by the body temperature curve are what we call biphasic body temperature. The average difference between high and low temperatures is 0.3 to 0.5 degrees. When the temperature drops abruptly the day before or on the day of menstruation, a new cycle begins again. A biphasic body temperature indicates ovulation of the ovaries. Why is it that the body temperature can rise right after ovulation? After ovulation, the corpus luteum of the ovary gradually develops and the progesterone secreted by the corpus luteum stimulates the temperature center, causing an increase in body temperature. Usually the high temperature phase should last for at least 12 days. Below 12 days, or if the high temperature phase rises very slowly or not too high, it may be a sign of luteal insufficiency. When a woman is pregnant and the ovarian corpus luteum continues to develop without shrinking, the body temperature will remain high. Usually the high temperature phase lasts for 16 days and does not fall back, we should consider if it is pregnancy.