Originally Posted by
Mark E. Hurling
IWB: Translation from the American, Inside the Waist Band holster for concealed carry. Found one today at Rural King. Bianchi. Been making good product since the 70's.
As for the diaphragm. I was surprised to learn this myself. The diaphragm mostly aids in breathing but it also plays a role in the core and spinal alignment of the lumbars. It attaches at L3.
If the diaphragm is tight, it can pull the lower lumbars (L4 and L5) out of alignment. It hurts, but it works. I'll take the short term discomfort of around 60 seconds for relief of the lower back for the rest of the day.