thestaggy
Honorary Master
The lower you bring the dumbell down, the more tension you put on your pectorals. So go low - just watch your rotator cuffs.
Before you start your set pull your shoulder blades together. This will isolate your chest more and take strain off your shoulders. But most importantly GO LOW when you bring the weight to your chest and never bounce the barbell off. To put more tension on the pecs rather pause for a moment at end of the eccentric movement.
So much of this. I knackered my right shoulder pushing myself. Had to take a break and get myself back into it, starting with only push-ups.
My biggest issue is keeping my shoulder blades together. It is like the weight is pushing my back flat again. The frustrating thing is, I can feel a difference between shoulders pulled in and back nearly flat. Shoulders in and you can really feel your chest is doing some work.