Why do some people like to eat fingers and pens?

Let's talk about several possibilities of biting pens and fingers first.

1. Biting a pen or finger under great pressure is a conditioned reflex to concentrate in this way.

2. Psychological factors. The professional name is "nail biting". The reason may be nervousness, and then stress. But many people will also be affected by the environment. For example, family members or friends who have this behavior around them.

3. Genetic factors. Caused by DNA chain

4. Lack of nutrition. The body lacks some essential trace elements such as iron and zinc. It's hard to concentrate. These methods are needed to help focus.

It is suggested to restrain yourself as much as possible and correct this bad habit as soon as possible.