It's like how some birds feed their young, they regurgitate their stomach contents but in the case of humans it's more like feeding a toilet bowl. Ain't a pretty picture right? Well, it's the truth and if we don't take this issue more seriously it's going to get out of hand. Prolesan Pure They'll find ways to involve their gag reflex after meals in hoping to vomit out the contents of their stomach. When you vomit, the stomach acid can damage all of the inner walls on the way out, frequently doing so will be very damaging to your health and not to mention this can develop into a very nasty habit which is extremely difficult to undo.