If you generate a crazy fuckton of body heat and then stand outside in those temperatures for only a few minutes, obviously you're gonna be fine. That's not co

If you generate a crazy fuckton of body heat and then stand outside in those temperatures for only a few minutes, obviously you're gonna be fine. That's not controversial, and NBA players routinely spend a minute or two surrounded by temperatures of -200 degrees as part of whole-body cryotherapy. Doing that without having sufficient warm clothes or a warm space nearby is very dangerous, because once you've radiated all your stored heat, you will freeze to death. Likewise, 120F is totally fine if you're well hydrated and in a dry environment. If you're dehydrated or it's humid, you will die. The wet-bulb temperature that will kill a human being is just 95F. You SHOULD fear extreme temperatures - if you don't treat them with respect and make sure you're prepared, it's very easy to end up in a terrible situation.