The time to take the temperature is usually chosen in the early morning, awake, fasting, resting state, which is the resting body temperature or called the basal metabolic temperature. You can also take your temperature 2-3 times a day, each time 6-8 hours apart, and you can trace a temperature curve within 24 hours. Under normal circumstances, human body temperature can fluctuate up and down within 24 hours, but the range of fluctuation will not exceed 1℃. It is also related to objective factors such as food, environmental temperature, emotions and clothing. Therefore, the temperature should be measured repeatedly, and each time you can take three times to take the average, it will be more accurate.