Have you ever noticed that ancient statues (lets use the Greek ideal as these are the inspiration for the sculptures that followed) of athletes or mythological hero's do not have the thick bulky pec's of modern bodybuilders? They did however have rugged, well-etched abs, thick strong midsections, thick strong muscular arms and thighs, naturally long full diamond-shaped calves, round delts, and a wide thickly muscled back. Of course exercises such as bench presses didn't exist (why would you lie on your back to press a weight anyway?). So where did the fascination with big pecs come from, how did it develop and why has it persisted?
When people exercised in the past it was more than likely with performance in mind, be it for the arena, the military, competition or it was simply just hard labour. Providing nutrition was in order a good physique would have been a by-product of that exercise / work, which leads us on to our fascination with good physiques as it is an indication of good health but why the big tits?
Have we seen the pinnacle of muscular development, will we see a shift in what we perceive as ideal or is it just a matter of what's in style?