Natural Bodybuilding is a completely different ball game to bodybuilding using 'PED'S'. We have to focus a lot on maximizing our testosterone levels among other growth factors like hgh, igf1 etc. As we are not receiving an exogenous supply. To maximize these, diet, supplements, lifestyle eg 'amount of sleep' and intense training are needed. A lack of sleep or over consumption of alcohol will negatively impact our hormonal environment where as that does not apply to a bodybuilder using performance enhancing drugs!