It could be many things. It could be from slouching or sitting in a way that is causing the diaphragm to be compressed. Do not try to over straighten, just think of relaxing the muscles and allowing yourself to fall into a natural position. It could be injury from working out and doing crunches or other movements. It could be a stomach ulcer.
Another option is to blanch green beans quickly. Blanch your green beans by boiling them for 3 or 4 minutes. This removes the skin of your green beans. You want your beans to be somewhat tender, yet have a little bit of crispness to them. Determine the crispness, by how long you boil them.
Quick Answer. Cook pre-soaked pinto beans for four to six minutes in the pressure cooker. Cook beans that have not been soaked for between 22 and 25 minutes. Soaked beans are ones that have been placed in a pot of cool water for at least six hours prior to cooking. Continue Reading.