This is determined by genes, and carbon water makes people happy.

This is determined by genes, and carbon water makes people happy. 

    When we were monkeys, carbohydrates were difficult to preserve, so every time we met, we had to fill up our stomachs, because the carbohydrates would definitely be eaten by other animals the next time we came. Since carbohydrate can be broken down into sugar, and sugar can directly serve our brain functions, it will feel very hilarious after eating.

   This feeling has continued to the present, so now some people say that carbon water makes people happy.