Traditional Culture Encyclopedia - Weather forecast - What is the reason for the red face in hot work outside in dog days?

What is the reason for the red face in hot work outside in dog days?

because

When the sun is too big and the weather is too hot, the human body needs to adjust itself and dissipate heat through pores. When it is too hot, the heat dissipation capacity of pores is insufficient, and sweat is needed to take away heat.

The face is red because the whole body has poor blood circulation and the blood wants to gush out. When the temperature drops, the blood will naturally not turn red. Of course, if you freeze in the refrigerator for a while, your blood will be more inactive and your face will turn white.