37°C is not considered a fever. The body temperature of a healthy person is relatively constant, with an oral sublingual temperature of 36.3°C-37.2°C, a rectal temperature of 36.5°C-37.7°C, and an axillary temperature of 36.0°C-37.0°C. This shows that a body temperature of 37°C is within the normal range, regardless of the measurement method. Taking axillary temperature as an example, it is generally ≥37.3℃ is counted as fever, 37.3℃-38℃ is low fever, 38.1℃-40℃ is high fever, and over 40℃ is super high fever and the patient may have a life-threatening condition. Therefore, a body temperature of 37℃ is not considered a fever and is considered a normal body temperature. Only a body temperature of more than 37.3℃ is considered a fever and requires antipyretic treatment. If the fever is low, the use of physical fever reduction methods is sufficient. If the fever is high, antipyretic drugs are required. If the body temperature is over 40℃, you need to seek medical attention for fever reduction. The human body has a better thermoregulatory system to maintain normal life activity needs, body temperature will fluctuate with the influence of internal and external factors of the body, such as age, gender, diet, exercise, environmental conditions, etc. can affect the change of body temperature, as well as some disease states can also affect the abnormal changes in body temperature. For example, the body temperature of children is generally higher than that of adults, and the body temperature of the elderly is lower than that of young adults; the normal adult body temperature generally fluctuates around the clock by no more than 1℃, with the lowest temperature at 2-5 am and the highest temperature at 17-19 pm. Body temperature will also rise after strenuous exercise or a full meal. The body temperature of women during pregnancy and around the time of menstruation is also slightly higher than usual.