1) Evaporation of sweat. Through sweat glands, sweat is released on the surface of the skin, then evaporates, taking heat from the body and lowering its temperature.
2) The hair (coat) retains air, preventing the outflow of warm air from the body and the influx of cold.
3) Subcutaneous fat also retains heat inside the body.
4) Change in the lumen of the capillaries: narrowing – reduces heat transfer; expansion – reinforces.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.