no doubt about training smarter. thats why i do assortment of exercises, before it was all dumbells and barbell work, now i use the hammer stregnth equipment with dumbells ect, sometimes hammer stregnth only, giving joints and ligaments,tendons a break.
i do, or i try to do more cardio; or weights and cardio later in the work out, giant sets also keep the heart pumping hard.
as long as im gettting in there and making progress in some way.
other that a occasional pro hormone i train drug free.