What is the normal body temperature range?

The normal body temperature range usually varies depending on the measurement site. For oral measurement, the normal body temperature range is approximately between 36.3°C and 37.2°C. When measuring under the armpit, the normal body temperature is slightly lower due to environmental temperature influences, generally ranging between 36°C and 37°C. For rectal measurement, which is closer to internal body temperature, the normal range is somewhat higher, approximately between 36.5°C and 37.7°C. These temperature ranges are based on the physiological conditions of most people, but individual body temperatures may fluctuate due to factors such as age, gender, activity level, time of day (e.g., circadian variations), and physiological status (e.g., pregnancy, illness). Therefore, when measuring body temperature, these factors should be considered, and assessments should be made in conjunction with individual circumstances.