Now I am 38. For the last 12-15 years (!) I have been drinking 1 to 2 liters of Coca-Cola a day every day, except for weekends (beer, vodka). Height 180, weight 82, profession system administrator, I don't go to the gym, I pull myself up 10 times. There is no hole in the stomach.
I drank an awful lot of Coke once. so much that the next day it was not good for me, but my stomach did not bite me. But really, how many physically fit in 6 hours, I drank so much. I never did such experiments again, of course. I had terrible weakness and dry mouth.
Sorry for a soft mark instead of a hard one, I'm writing from my phone.
The danger of Coca-Cola lies in the ability of phosphoric acid to wash out calcium, it is very harmful to the teeth (after rinsing your mouth with Coca-Cola, you will notice that something is stuck on your teeth, it softens the tooth enamel), so you only need to drink the drink through a tube. Unless, of course, there is a need to drink it at all. In my opinion, real Russian kvass will give cola a huge head start in all respects.
I remove the scale in the kettle with Coca-Cola: I pour in a full kettle, boil it, and after a few minutes I drain it and everything is fine. I don’t use it inside.))) In hot weather we drink homemade "phantom" and our other drinks. I buy soda, oranges. I cook sugar syrup (by eye). I pour sugar syrup into a glass, cut an orange, squeeze out the juice, fill it with sparkling mineral water and stir it quickly (sometimes you don't have to stir it, everything dissolves quickly). You can immediately cook the syrup with any berries / fruits and there will be fruit and berry water. Yummy! Give it a try!
In addition to the answer above, I should note that exposure to sugar and citric acid is guaranteed to create holes in your teeth, if any, after an ocean of cola.
You can drink at least an ocean of Coca-Cola. They say that there is so much acid in cola that you put an iron nail in a glass with it - and it will dissolve in a few days. It's true - the nail will really dissolve.
But if you put this nail in a glass of grapefruit juice, your nail will dissolve even faster - grapefruit juice is more acidic than Coke. At the same time, no one shouts about its harm. Why?
It's time to remember that our stomach is an acidic environment. The acidity of cola for the stomach is child's play.
I'm not saying that Coca-Cola is a harmless drink. But the harm is caused not by its acidity, but by the amount of sugar in the composition. If you drink ocean cola, you will gain a lot of excess weight, but not a hole in your stomach.