My mid-back got a serious stretching out and aligning. I think that right at this moment, my mid-bakc is the happiest place on earth.
I've got a chronic problem with my mid-back. In part, I think this is because of a car accident I had a few years ago, and in part, it is due to an old weightlifting injury...
...but mostly it is due to years and years of having big boobs.
It is tempting for girls with big boobs to hunch and roll their shoulders forward, to make their chest looks smaller.
This is mostly so that rude boys with diarreah of the mouth and dirty old men don't notice you and give you unwanted attention.
Since I am only a couple weeks away from starting my 40th year on the planet, I'll offer you younger women some advice: and pull those shoulders back and walk straight. If anyone is rude and disrespectful of you because they think you not slouching and hiding your chest is an invitation to them, kick their asses right away and they will learn.
You will save your spine a lot of heartache and make the world a better place all at once.