It all started back in 2013, when a a former heroin addict decided to respond to the question: “What does it feel like to do heroin?” on Reddit.  The short essay was turned into a YouTube clip with a powerful voice-over. In the wake of actor Philip Seymour Hoffman’s death of an apparent drug overdose, the clip received a fresh viral boost and has been viewed over 800,000 times. Trust us when we say it's worth watching in full.