How many people are introverts in the world?

Here is the list.

We do not know how true it is but it is quite worry.

However, does introvert a inheritance gene ?

According to the research, not much, swimming can help to reduce the introvert degree, in short it is the health problem, isn't it?

Here is the list of introverts. But Malaysia is down in the bottom, is that means Malaysia has less introvert people ?

Why Introverts Should Take Up New, Random Hobbies,

Malaysiaku Sayang