Have you ever wondered why the average human body temperature we always hear about is 98.6 F? How did they get so specific? Did they conduct a bunch of studies and actually come to that exact average?
It’s simple, actually: The rest of the world uses the metric system, so we tend to list the average human body temperature at 37 degrees Celsius. That isn’t to say that’s the exact number. It isn’t; human body temperature naturally fluctuates slightly throughout the day, so there really is no exact number. It just so happens that the average temperature is around 37 degrees Celsius, which, you guessed it, is equivalent to 98.6 degrees Fahrenheit.