>>76256420 (OP)You just need to stand up straight.
>b-but my workout>b-but my stretchYou just need to stand up straight.
There is no magic, you have just forgotten what it means to stand up straight.
If you are looking at your back, right between the scapulas there is a spot that you must actively hold while at the exact same time you are lifting every joint above this slowly up toward the sky.
Sometimes there is an audible pop, sometimes an audible grind, however there is almost always a sense of instant relief followed by a few days of soreness since you have stretched joints that potentially haven't moved in years.
Don't snap your fucking neck retard, but be firm.
If you can't do what I am telling you right now, you might as well fall for the "weak muscle" shills and start transitioning to boot.
There is no weak muscle, there is only your lack of understanding on how to use a muscle.