Your stomach is constantly digesting itself
The stomach contains so many enzymes and acids that it slowly digests itself. Luckily the body produces cells quickly enough to replace the cells that get destroyed every day. We end up with a new stomach lining about every three days.
Some idiot didn't get the science facts right, there is a DOMINANCE of one nostril, and it shifts every couple of hours to another one, but it sure is not 100% one nostril, in normal circumstances.