Anabolic steroids, also known as anabolic-androgenic steroids (AAS), are a class of drugs that are structurally related to testosterone, the main male sex hormone, and produce effects by binding to the androgen receptor. Anabolic steroids have a number of medical uses, but are also used by athletes to increase muscle size, strength, and performance.
Various AAS and related compounds
Numerous vials of injectable AAS
A vial of injectable testosterone cypionate
22-year-old man with gynecomastia not due to AAS use. Before and after gynecomastia surgery.
Bodybuilding is the practice of progressive resistance exercise to build, control, and develop one's muscles via hypertrophy. An individual who engages in this activity is referred to as a bodybuilder. It is primarily undertaken for aesthetic purposes over functional ones, distinguishing it from similar activities such as powerlifting and calisthenics.
Arnold Schwarzenegger, one of the most notable figures in bodybuilding, 1974
A bodybuilder performs the incline dumbbell press.
The Farnese Hercules, 216 AD
Eugen Sandow, often referred to as the "Father of Modern Bodybuilding"