struggling to get fat is one things, getting into contest shape is totally another thing, the guy can have very fast metabolism and because of that he never gets really fat no matter what he eats, but he can struggle to get in really good shape. Hard time getting fat is genetic and drug thing, getting in superb condition is suffering and mental thing. You are top class coach I do not need to explain those simple things to you. You were former fat guy, Alex Azarian were former fat guy but you two have got in superb shape back then. Because of the metabolism? No. You two worked hard and were suffering during the diets, this is completely mental thing, not genetic.