I’m a reasonably strong 20 year old male, but I only bench 135 lbs max. The rest of my routine is on par with a high fitness level, but my lat raises, shoulder press, and especially bench are particularly poor.

My chest doesn’t burn when I press and I mostly feel it in my triceps, no matter how wide or close I make my grip. Only chest flies actually seem to work my chest, and I think there’s something off with my shoulder. Also, during lateral raises, my right trap kicks in and helps pull up my arm, as if my body is favoring it. I am double-jointed in my shoulders, if that helps.

Any ideas?