Some time ago, I fell while running. The result: bleeding abrasions on my arm and leg. When I got home, the blood had already coagulated, and the bleeding had stopped. You can learn more about such almost miraculous properties of this life elixir starting on page 26. Also: What if something is wrong with the blood? For people with blood disorders, for example, my situation could have been problematic. Hemophilia can be well treated, but now some affected individuals are hoping for a cure thanks to gene therapy. You can read about how promising this method is starting on page 34. By the way, I regularly go running to relax and stay fit. After frequent restaurant visits, I also incorporate an extra workout to keep my weight in balance. How intense a workout really needs to be to lose weight is explained by nutritionist Hans Hauner (page 20). And if one can't find the time to do something good for the body, one should at least maintain a positive attitude. Because the right mindset helps to age healthily (page 68). Enjoy your reading, wishes Alina Schadwinkel, editorial team of Spektrum der Wissenschaft.