Your body temperature is a measure of how well your body maintains its internal heat. When your temperature is too high, it can indicate fever or infection, and when it’s too low, it can signal hypothermia or other health issues. We check your body temperature regularly to ensure it stays within a normal range, as fluctuations can provide critical clues about your overall health. Fever refers to an elevated body temperature, while hypothermia refers to a dangerously low temperature.