Why do people shake their feet?

Psychologically speaking, shaking one leg or both legs is a manifestation of relaxation, which is a subconscious relaxation.

Of course, people may shake their legs when they are slightly nervous.

If you can't control shaking your legs, you should see a neurologist.

Modern people are under a lot of pressure from life. Shaking your feet, smoking, staring blankly, cutting your hands and so on. It's all an unconscious manifestation of relieving tension and thinking about the city, and it's also an outlet. But some people show these behaviors without any pressure. This is a bad habit they develop when they are not paying attention at ordinary times, and they must be changed. Otherwise, it is impolite to show it in some public places and private meetings. There is also a more serious situation, that is, it should be shaking all the time, not only the feet but also the whole body, and that is the nervous system disease Parkinson's syndrome.