Doping means taking a substance to become stronger or gain advantages in sports, or to change how you look. It is banned in almost the entire world and is often very dangerous. But what happens in the body when you use doping substances? And how does the body react when you add more testosterone than the body naturally produces? In this film, you will learn more about this. You'll also learn that anabolic androgenic steroids and ephedrine are two common doping substances that can cause heart problems, mental disorders, and addiction and that you often need help to overcome a doping addiction.