1. Etiquette and image: Shaking legs is considered impolite behavior in many cultural and social situations, which may convey the impression of impatience and disrespect towards others, affecting personal image and others' evaluation of oneself.
2. Physiology and Health: Long term leg tremors may cause unnecessary burden on leg muscles and joints, leading to muscle fatigue, soreness, and even joint problems. Shaking legs may also affect blood circulation and be detrimental to physical health.
3. Psychological suggestion: Shaking legs is sometimes seen as a manifestation of tension, anxiety, or unease, and frequent shaking may reinforce this psychological state, which is not conducive to emotional stability and mental health. In formal occasions or situations that require concentration, shaking legs may also distract attention, affecting work efficiency and decision-making ability.