5 to 10 minutes after starting a walk I get a pain just below my right rib cage. The faster I walk, the sooner it appears. It often spreads horizontally up to the left side of my belly, or starts just below the sternum and spreads to both sides. I usually get relief by means of a massage pressing and sliding downwards on the spot, but the pain returns some 100 feet ahead. The pain ends as soon as I stop walking and after some 15 to 20 minutes sitting, I can walk again, but it all returns as described. An empty stomach retards substantially the unleashing of the pain, to the extent that a short slow walk may be uneventful.