The behavior itself will not directly make the hands look good, but it has some benefits for the hands, such as:

1. Hand exercise: playing with walnuts can exercise the muscles of the hands. and flexibility, enhancing hand coordination and fine motor abilities.

2. Promote blood circulation: Hand activities can promote blood circulation, so that the skin of the hands can get more nutrients and oxygen, which helps to maintain the health of the skin.

3. Relaxation: Playing with walnuts can be used as a relaxing activity, reducing stress and anxiety, and is beneficial to overall physical and mental health.