Hello, if this happens often, it is a symptom of stomach cold, mostly because of spleen-yang deficiency or eating too much cold food.

Guiding opinions:

It is suggested to use traditional Chinese medicine, such as Wenweishu, Fuzi Lizhong Pill or Guipi Pill. In addition, pay attention to eat more dog meat, fennel, longan meat and so on. In diet, soaking feet with hot water also has a good effect.