 As we've seen, I mean, cooler places like Russia and Europe have had massive death rates because of heat. Well, let's talk about the human body. What are the upper tolerances that we can handle? Well, it's interesting. When you think about it, we like to keep or we need to keep our core temperature within a really very narrow range between about 36 and 37. And when the outside air temperature is higher than that, then it's very difficult for us to lose heat.