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.
You can make beans in 1 day to have for dinner. Hereâs how I do it: 1 lb of dried beans in pot and cover with water at least 1-2 inches over the beans. Boil for 10 minutes or you can let it come to a boil for a couple minutes and let it sit all day with the lid on. Drain.