Whats the deal with this? On other weightlifting forums that I am a member of, I have always read that being able to target your upper/lower chest is a complete myth. Yet on this forum people are happy to say do incline for upper chest, decline for lower etc. Which is right? Even if the EMG studies have shown that decline recruits more lower chest muscle fibres, does this actually correspond to increased growth of that area? Wouldn't the hypertrophy occur over the whole length of the fibre? I do appreciate that incline would target your pectoralis minor more than flat bench, but I can't imagine it growing big enough to "fill out your upper chest." Obviously muscle shape is genetic and you can't change it. You certainly can't alter the insertion points and so the only option is to cause hypertrophy in certain areas of the fibre. Is it possible?