Brawny has a good point about the inner and outer. But i can visually tell when i have finished my flys, my mid chest has that fiber look to it and much more pumped than not having done them.
Upper and lower forsure can be targeted. I used to only perform flat and decline benching, after cutting declines for incline i noticed a big difference in bringing up my upper chest. Especially when the inclines are dumbbells
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-OTK's LOG-
We lift weights and manipulate our diets so that we'll look good naked. Sure, it's healthy too, and we'll probably live a longer and more productive life than the average guy, but mostly it's about the naked thing.

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