Steroids. They've caused global scandals. They're banned in most athletic competitions. Yet the same properties that help elite athletes and bodybuilders improve performance also make steroids valuable for treating many illnesses and...

You've heard about them, but do you how they work? Or why they suck? Hank explains the science behind performance enhancers, including steroids, blood doping, and that stuff supposedly made out of deer antlers. You'll never look at...

Howcast - Learn if amino acids help build muscle from DreamBodies' Tony DiCostanzo in this Howcast bodybuilding diet video.

Howcast - Find out what to take before a weightlifting workout to help build muscle from DreamBodies' Tony DiCostanzo in this Howcast bodybuilding video.

This video is answering the question of what are metabolic reactions.

Zoom into the world of 'Enzymes,' where kids will learn how these tiny but mighty helpers speed up reactions in our bodies! It's a microscopic journey to see the science that makes us work.

Fluoxymesterone (brand name Halotestin) is an anabolic steroid with strong androgenic properties that has been used in the treatment of male hypogonadism, delayed puberty in males, and in the treatment of breast cancer in women. It is...

CGI showing space-filling three-dimensional molecular model of oxandrolone, an anabolic steroid

CGI showing space-filling three-dimensional molecular model of oxymetholone, an anabolic steroid

Nandrolone (19nortestosterone) is an anabolic steroid, used illegally by athletes such as baseball players Barry Bonds and Roger Clemens to improve their performance

Soccer Doping