How's your back? I've got trapped nerves due to being out of shape again disc issues and an unlevel hip. Due to my back issues I have them still when I'm skinny I have to be training my lower back so the muscle keeps it inline.
If you get any lower back pain or numbness I'd look into a chiro that does spinal nerve testing. When I first went only 30% of the nerves had satisfactory communication 50% didn't work at all and 20% were below standard communication.
I'd been to physios and doctors for years over it as out of nowhere I get rib and chest cramps and spasms. To the point I struggle to breathe or stand.
It's the only thing that's helped over the past 8 years .
I feel your pain.
I went to my first Chiro in 1980 and stayed with him until he died early/mid 90's
Sometimes more than once a week as necessary.
I have had quite a few Chiros since then but I have now found a Physio ( I had no faith in Physios before this) and he actually works one on one for 1/2 hour, and my Partner goes to him a s well.
In fact now I have the Physio (Murray Chalice Mountain Creek Physio) I don't go near Chiros, but of course apples for apples, if it works for you then don't stop.
He has also managed to fix my neck which all Chiros were unable to do since 1982..
You mention chest pain and this is usually caused by your spine around what is called T 12 vertebrae, and yes, sometimes hard to breathe and also very painful. Been there done that.
This problem has often been missdiagnosed by the Health Industry as Heart attack but not in my case although I now have a heart valve compliments of a pig, along with a pace maker fitted in 2018.
My partner broke her back in her late 30's so a few years ago I put her onto my Spinal Surgeon and he fixed that with similar rods and screws to my spine, but when she starts to get pain in the back I place her face down on the bed and check the length of her legs at the ankle bone, and whichever is shorter than the other I give it a reasonable pull with a small towel around her ankle, and usually a couple of hours later she is fine.
It is always good to have both legs the same length otherwise back pain is usually unavoidable.
I also have an inversion machine on which I hang from the feet when needed which is rare these days.
As to hips, well, I have a new right hip 14 months ago as well as 2 new knees a 5-6 years ago, the results of working too hard too stupid as a youngster.
Hope this helps.