The average human body temperature in degrees Celsius is typically around 37°C, although it can vary slightly among individuals and throughout the day. Factors such as age, sex, activity level, and time of day can influence body temperature. It is considered normal for a person's temperature to range from about 36.1°C to 37.2°C. Body temperature is regulated by the hypothalamus in the brain and serves as an important indicator of metabolic health. Changes in temperature can signal illness or infection, prompting further medical evaluation.