Why do ponies sweat in winter?

Normal, Yang Qi deficiency.

1. Normal: Pony mainly relies on sweating to regulate body temperature. There are 810 sweat glands per square centimeter on the skin surface. Most of the heat needs to be dissipated through the skin. Pony will have sweating after exercising in winter. Sweat situation.

2. Yang Qi deficiency: When the weather is cold in winter, the cold air entering the pony's body will cause the pony to become weak and sweat, which is a sign of Yang Qi deficiency.