I understand what you mean, but I'm certainly a person who had terrible posture and a super tight posterior chain. A program of getting to full squats (took me

I understand what you mean, but I'm certainly a person who had terrible posture and a super tight posterior chain. A program of getting to full squats (took me years!) has really helped my situation. Now I round my squats at 1.5x bodyweight, but not before... working on it.