How can people with bad stomachs eat to keep healthy?

I also have a little idea, that is, when I get up every morning, I drink a cup of warm water on an empty stomach. Remember that it is empty stomach, and it is best to add some honey to help clean the stomach. I used to have a bad stomach. I persisted for half a year and the effect was obvious. The most important thing is persistence. As long as you persist, your stomach will recover slowly.