I’m having a problem with my big muscles (back, legs and mainly chest) and it’s that no matter how hard I train them they always seem to be lagging in comparison with my arms (biceps, triceps and shoulders). I usually train 3 times a week, 1 big and 1 small muscle a day, but I was thinking about dropping isolated exercises and focusing on compound ones, What should I do to fix this in your opinion?
Also, the left side of my chest has developed a little more than my right side, not too much but I can feel the difference, How can I train to fix this too?
Some info about me: 21 y/o, 6’0, 140pounds, ectomorph, around 12% BF, been training for 2 year although I took a break for 3 months last december because of an elbow injury.
Thanks all in advance.