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Let's share a cool fact that many people might not know: our butts are always cold! Yes, you didn't mishear, it's a scientific fact. So, why are our butts always cold? Let's explore this interesting phenomenon together. First, we need to understand the distribution of body heat. The core temperature of the human body is around 37 degrees Celsius, but the surface temperature of our body changes with the environment. However, the butt, being the lower part of our body, seems to be always colder than other areas. Why is that? One reason is blood circulation. Our blood circulation system transports heat through arteries and veins. However, the blood circulation in the butt area is relatively poor, making it hard for heat to reach this area. Additionally, the fat layer in the butt area is relatively thin, which can't effectively keep the heat in. So, if your butt is hot, you're probably sick with a fever! This is because when we're sick, our body produces more heat to fight off bacteria and viruses. Therefore, if your butt suddenly gets hot, it might be a sign that your body is having a fever. Of course, this is just a simple way to judge, and it's not absolute. Don't believe it? Try it yourself! Measure your body temperature at home and then touch your butt. Isn't it always a bit cold? Haha, science is amazing!