The volume or “capacity” of the human stomach is not fixed. It can easily be increased or decreased. Since the stomach is a muscular pouch it can be stretched over a period of time by overfilling it on a regular basis. If you overstuff yourself and further bloat your stomach with large quantities of liquid after a major stuffing you will develop a slightly painful or uncomfortable feeling (some people love that feeling). That feeling is your stomach actually stretching! 
If you want to increase your capacity, just keep pushing yourself on a regular basis. Consistency is more important than an occasional extreme stuffing or binge. The bigger your stomach gets the easier and faster it will stretch because the stomach has more surface area that can stretch.
If you want to increase your capacity, just keep pushing yourself on a regular basis. Consistency is more important than an occasional extreme stuffing or binge. The bigger your stomach gets the easier and faster it will stretch because the stomach has more surface area that can stretch.
10 years