If everyone took the same amount of steroids, everyone would look like a professional bodybuilder.
One of the ironies of steroid use is that some people are genetically ‘gifted’ in terms of steroid receptors. That means that they have a large number of receptor sites in the muscles with which a particular steroid can combine and exert its mass-building effects. The man or woman who won the last contest might very well have the most active steroid receptors rather than being the most dedicated, knowledgeable bodybuilder. On the other hand, some people might possess very few receptors for a particular steroid. That’s why they experience very little, if any, growth on a particular steroid. Another factor that influences receptor affinity is age. The highest receptor affinity seems to occur in late teenage years. This is a generalization, but it seems to be true for a good number of people. Since there is a greater uptake in these individuals, they are often able to take lower dosages for longer periods of time and make better gains than older users. The truth is, two bodybuilders could take the same steroid stack, train and eat the same, and one could turn out to be in the Olympia, and the other might never even win a local contest. The difference in how people react to these drugs is incredible.