When human body temperature is normal, the temperature of oral cavity (sublingual) is 36.2-37.3 degrees. The underarm temperature is 36.0-37.0 degrees. The rectal temperature (anal temperature) is 36.5-37.5 degrees.
During the day and night, normal people's body temperature is the lowest in the early morning sleep, rising sharply at 7-9 am, then rising slowly, reaching the highest value at 17- 19, then falling, and reaching the lowest stable value at 23-24 am. The difference between the highest and lowest values is usually between 1 degree.
Generally speaking, women's body temperature is slightly higher than that of men of the same age. Women's body temperature is higher before menstruation, dropping by about 0.2-0.3 degrees during menstruation, usually dropping by 0.2 degrees during ovulation, and then suddenly rising.
Normal people's body temperature fluctuates every day, and adult women's body temperature fluctuation is also related to menstrual cycle. In women's menstrual cycle, the basal body temperature before ovulation is often low, and the normal body temperature before getting up every morning (that is, the basal body temperature) is below 37 degrees, about 36.4-36.6 degrees. Ovulation period decreased slightly, with an average increase of about 0.5 degrees after ovulation, and it did not begin to decrease until before menstrual cramps.