The normal body temperature of a person is 36℃~37℃ (underarm), but Dr. Ishihara Tak, a Japanese natural health expert, put forward a more precise range: the ideal body temperature is 36.5℃ ~ 36.8℃.
37℃ is only an approximate figure of body temperature, and there are differences between different parts of the human body, morning and evening, and between men and women. The oral temperature of normal people is 36.3℃ ~ 37.2℃, the axillary temperature is 0.3℃ ~ 0.6℃ lower than the oral temperature, and the rectal temperature is 0.3℃ ~ 0.5℃ higher than the oral temperature. In a day, the body temperature is the lowest at 2 ~ 5 am and the highest at 5 ~ 7 pm.
Extended data Constant body temperature allows us to live in different temperature environments, but different people's body temperatures are slightly different. Children's body temperature is slightly higher, reaching 36.8℃ ~ 37℃; Babies and the elderly have lower body temperatures. Especially for premature infants, their body temperature is easily influenced by the environment because of the imperfect development of thermoregulation mechanism. The average body temperature of women is about 0.3℃ higher than that of men, and it will change with the change of menstrual cycle.
Normal women's basal body temperature takes ovulation day as the dividing point, showing a state of low before and high after, also known as "biphasic body temperature". There is little progesterone before ovulation, and the body temperature is generally 36.2℃. After ovulation, the body temperature rises sharply by 0.3℃~0.6℃, which makes the basal body temperature rise to about 36.7℃. The study of Pennsylvania State University found that the body temperature of anemic women was 0.7℃ lower than that of women with normal hemoglobin, and the heat production was less 13%.
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