steroids only has an effect on building muscles if one trains extremely hard - and that in fact the roids enable the culprit to train even harder, whereas EPO and **** that increases hemacrotite levels, actually would work on anyone regardless of training level? In other words, EPO is used to create blood rich in red cells, blood that is then drained and injected during competition. Is it then correct to assume that EPO is not used in a training period for other purposes than to create thick blood, and once that is done, the athlete goes about to train undrugged, until competition day when the blood is pumped back into the veins?