So I've been lifting for a longgggg time, and was looking in the mirror the other day and noticed a few things, one shoulder is higher than the other, my head is forward in relation to the rest of my body and my shoulders are rolled forward as well. I've always wondered why my chest has never really gotten big despite my ability to get really good results in every other muscle group and I feel like a lot of it has to do with my poor posture. Also my right pec is less developed than the left. I feel like fixing my posture is long overdue and will help fix a lot of the issues I have with lifting. Let me know if you guys have any good resources that helped you.