How is it caused?
Weakness, qi and blood weakness
The meridians and blood vessels in the body are blocked and the blood circulation is too slow.
Cold and dampness in the body are heavy, which blocks the circulation of qi and blood.
Fingers are the peripheral parts of the body, and qi and blood are the most difficult to reach. When the body lacks qi and blood and runs too slowly, the fingers will lack qi and blood nourishment and become stiff.
To restore it, it is necessary to strengthen physical fitness, speed up the circulation of qi and blood throughout the body, clear the blockage, and discharge the garbage and cold and dampness in the body through sweating. Over time, the qi and blood in the body will be fully accessible, and the fingers will be nourished by sufficient qi and blood, becoming flexible, flexible, moist and powerful.
How? You can Baidu this article, "Six reasons for physical stiffness and strain, why are people who practice traditional martial arts easy, flexible and easy to use?" The article tells the story of a recovery method of traditional sports, hoping to help you and adopt it.