Methandienon is considered to be the best product for people who compete in non-aerobic oriented sports. It promotes drastic protein synthesis, enhances glycogenolysis (repletion of glycogen after exercise) and stimulates strength in a very direct and fast-acting way. It may be less useful to those competing in aerobic events as it also diminishes cell respiration.
But Methandienon manifests itself in a distinct manner : rapid and fast-acting build-up of strength and mass is noticed. That's why its often used at the beginning of cycle consisting of mostly injectables like long-acting Testosterone esters and Nandrolone. Since the effects of such drugs don't fully come out for the first 10-15 days, Methandienon is dosed in to provide immediate and visible results. It has a rather weak androgenic component and an obviously quite strong and visible anabolic component. Its effects are largely non-AR mediated, which is documented by its rather low influence on the natural endocrine system and the fact that it decreases rather than increases red blood cell content in the blood. Which means that one worry users of Methandienon, especially short term, needn't fear is the dramatic shutdown of natural testosterone production as is often the case with very androgenic compounds. Of course this effect is dose-dependent.