Stress, Pain and Opioids. Endorphins and So Much More

Are you stressed from time to time? There is hardly a person who would answer this question in the negative, and the vast majority have no life at all, only "nothing-but-stress". Today stress is a very trendy word: it is discussed in the media, it is written about in social networks, it is studied by biologists, doctors, psychologists. And despite this, we must admit that we still obviously don't know enough about it.

So, what causes stress? Is it as harmful as we used to think? And what do endorphins, the well-known happy hormones, have to do with it?