The same temperature, such as 29 degrees in the daytime today, doesn't feel very hot, but it feels very hot in rainy days. What happened?

The normal body temperature of the human body is around 37℃. But this does not mean that people are most comfortable when they keep the temperature of 37℃ in clothes or houses. Because the heat generated by human metabolism must be radiated at a certain speed. If the ambient temperature is too high, the heat can't be dissipated and accumulated in the body, people will feel very uncomfortable. At this time, the human body will excrete a lot of sweat and reduce the body temperature by evaporation and heat dissipation. In dog days, the humidity is generally high. Generally, when it is higher than 80%, it will obviously feel sultry, sweat is not easy to be excreted, and the temperature is not well released, so it feels particularly hot. So today's thermometers generally have humidity and two scales at the same time, so that we can know whether the temperature is appropriate. The most suitable temperature for human body is 18 degrees and humidity is 40%-60%.