Thank you for your service my hero

If you're going to be snarky about units, at least get the significant digits correct. The infographic gives 100°F as the temperature. If I had to guess I'd say that wherever that number came from, it's precision is much less than a whole °F, but for simplicity let's just say that the precision is a whole number, no decimal places in the precision. At that precision 37.5°C and 38°C are both also 100°F. There are 9/5 °F for every °C after all. If you'd said 37.7°C I wouldn't have even commented. But that was one decimal place too far (and being too lazy to find the ° symbol or type out degrees).

You're all probably saying, "Who cares? Why do you care? Aren't you just being any even more annoying pedant?"

I do. I don't know. Probably.

But, if you're going to be a smartass, you better at least try to be smart about it.

So just about human body temperature, pretty neat

0° Fahrenheit is human body temperature.

0° F is an ice and salt mix below freezing.