There is a lot of rubbish in people's blood, but the composition of blood will change with the change of the body. If the body fat is too high and the blood circulation is slow, the blood at the knee can not circulate quickly in time, which will make the knee chills.

Lack of nutrients such as vegetables;

The human body's nutrition needs to be balanced to be normal. General vegetables can promote the body's heat balance, such as onions, fungus, kelp and so on. You can eat some dog meat and mutton to warm yourself up in winter.

The cold in the body is heavier:

Everyone knows that the coldness in the body is a sign of deficiency of qi and blood, which has a great relationship with the meridians of the human body.

Therefore, cold is also an important cause of knee chills, and cupping and soaking in hot water can be used to resist the cold.