Almost everyone is doing it. Aimlessly scrolling through their social media feeds. From presidents to the postmen, most people you know and probably even yourself. Mindlessly, your fingers move across the screen, and content, from selfies to memes, flickers by at a blistering pace. Why is it that the screen sometimes seems more important than looking up and being present in real life? And what does it mean that more and more people are turning into so-called "Scroll Zombies"? Sven Rollenhagen thoughtfully discusses social media use and how it affects us both psychologically and physically.