Hello all! I would like to thank Bjorn for creating this website with so much useful info.
My name's Wojtek and I'm from Poland. I'm 22 years old suffering from PE. I myself have moderate PE about 3-3,5 cm deep. Also I have noticable rib flaring. I think my left side is flared more and it is little bit more sinked in. I can notice it when I'm lying on my back then it's visible that left side rib is at little higher level than the right one. Also left rib is little different than right. It's pretty much more compressed.
Recently I tried to gather as much info about treating condition without surgery. I stumbled across many pages and blogs that claim excercises can correct PE. Still each site lacked some points and Bjorn blog is the only one I found that covers problem as a whole both treating symptoms but also roots of PE.
While peeking throught the web I found that almost everyone points out that posture is the key to treating PE and therefore must be taken care of as a priority. Also medical sources claims this. Theres physician here in Poland who have taken approach into treating PE without surgery. His main points are that person has to have perfect posture first. Then a person should wear vacuum bell to loosen up sternum area in a pair with a breathing and physical excercises . After that a custom brace is constructed to treat flaring ribs.
Still his method is pretty expensive for me so I decided to try treating condition myself. I think that with proper excercises (also the ones that Bjorn developed) can loosen up sternum area and lift it up so vacuum bell is not neccesarry (although I think it's great addition to whole treatment).
Second thing that most sites claim is that you should do breathing excercises which are essential. But noone except Bjorn noticed that it is exhale not inhale that actually lifts up sternum. So its good to concentrate on heavy, full exhaling (which also trains inside abdominal muscles which are helpful to tighten ribs and therefore reduce flaring).
Physical exercises are pretty similiar to what Bjorn is proposing so it's good to know that persons with different approaches find similiar excercises to work up.
Still I found one approach which might be great addition to Bjorns method (Bjorn I would like to ask you for opinion about this).
Basically I found one person who claims that he treated his PE with doing rib expansion excercises. He was doing breathing squats, dumb pullovers and rader chest pulls. This allowed him to expand his ribcage in pretty oldschool way which helped to lift sternum aswell. I can provide a link for anyone interested.
Bjorn pointed also out the important role of diaphragm into development of PE. I was same told by a specialist who assesed me when I had suspected scoliosis in my teens (but I was told my spine is perfectly straight). He told me to do lots of abs workout and that cause of my PE is basically diaphragm who developed incorrectly and therefore caused my PE.
So to sum it up theres a lot of sense what Bjorn and other people are proposing and altought it might be harder and longer path to recovery than surgery, I think its worth a try because theres a lot more benefits than just treating PE. Posture correction might benefit throughout your whole life!
I'm also thinking about buying posture correction brace. I'm interested in this version:

I'm posting my recent photos where PE is visible.
From the front:

Front while inhaling (visible ribs and the left looks different than the right which looks more normal)

Right side (looks better than left):

Left side:

As you can see I'm very skinny and I find hard to gain any mass. I'm also pretty tall at 191cm.
Thanks for your attention in the next posts I will try to post a plan into my correction.