Topic: Why we feel pain and how we feel pain. Pain is an unpleasant feeling but it is necessary. Pain is first step of brain’s protection mechanism which alerts us of damage in our body or cautions us of possible harm. Pain is such compelling feeling because it’s our brain’s trump card to make us take care of wounds, cuts etc. How brain produces pain, how pain works, how to stop pain – for answer of these questions please watch the full video.