If you take your temperature when you are feeling healthy and normal, the thermometer will read around 37ºC. That is the temperature we regard as being normal. When the air temperature gets that hot, it feels anything but normal. We soon get hot and uncomfortable and try to find somewhere cool. Of we were not wearing any clothes, and just relaxed and did nothing too active, we would probably feel all right at that temperature. But modern life is not like that,
Any uncovered part of our body radiates heat. So we soon feel cold if we go out in shorts and T-shirts and the temperature drops. If we sat still in a garden, wearing juts a swimming costume, then an air temperature of 37ºC would not feel too bad. The heat we radiated would be the same temperature as the air around us and a balance would be struck. Things would start getting uncomfortable, however, if we moved into a confined space in that temperature. The heat from our bodies would gradually warm up the air around us. And that would make us hotter still. In the same way, if we did any physical activity, we would get warmer, and again we would begin to radiate more heat.
The story is the same when we wear clothes. These stop us radiating heat as efficiently as we would without them, and consequently we feel hot. That is why we generally feel more comfortable at air temperatures lower than our body temperature.
Picture Credit : Google
