I thought fruit was supposed to be eaten alone, otherwise it rots in our stomach? A question I am often asked when I talk about this hack involves fruit. I categorize fruits in the “sugars” category, because although they contain fiber, they are made up mostly of glucose, fructose, and sucrose—aka sugars. Therefore they should be eaten last. But people ask, “Doesn’t eating fruit last cause it to rot in the stomach?” The short answer is no.