I've tried for 3 years now to isolate and define my upper chest

I’ve tried for 3 years now to isolate and define my upper chest. Is it genetic? I spent several weeks a while back on a very chest centric workout. Saw a tiny bit of gain but it wasn’t worth the effort for so little gain. What’s the secret? 🤨 Find more fitness content similar to FitInMy50s

The Best Chest Exercises: A $12,000 Machine Reveals What They Are

Chest Training Mistakes: The 7 Deadly Sins Of Chest Training

Are pull ups, dips and push ups enough for building an upper body? - Quora

Gyno and Bodybuilding: Excess Breast Tissue and What to Do About It

Upper Chest Workout: Here's How to Target These Tricky Muscles - Gymless

How to Get Bigger (9 Skinny Guy Mistakes)

16 Best Cable Chest Exercises (With Sample Workout) – Fitbod

Workouts for an Uneven Chest

3 Years Lifting. Zero Muscle Built. Why? Help! : r/naturalbodybuilding

Upper Chest Workout: Here's How to Target These Tricky Muscles - Gymless

This Dumbbell Chest Workout Will Also Fire Up Your Abs

This Dumbbell Chest Workout Will Also Fire Up Your Abs