You don’t really have a “middle chest” so to speak. What you need is more chest, period. Continue to lift heavier, and heavier, gain lean muscle, and over time ( years ) you will get a “middle chest”.
There is however an upper and a lower chest. Work on both of those for years and you’ll be good.
You need to work harder. You need to get more training years under your belt.
That’s it, sorry no magic tricks here, just hard, hard work. Get to it!
Terrible answer. Thibs has an article about building up certain areas of the chest. Look it up.[/quote]
Milos agrees with you.