The first reason is that some people can really eat so much, and I don't know much about body structure and system, but this kind of thing is not surprising. It's not surprising that you say that people who eat iron are not fat. In addition, I've heard others say that your stomach can get bigger and smaller when you eat, and then it will shrink back when you don't eat. There are really many anchors who eat live broadcasts online. Some dare not eat, such as several catties of lobster and hairy crabs.
I saw a video on the App. A man ate a bowl of sea cucumber and a nosebleed came out. I really don't understand. The second reason is that you can eat a lot, but not so much, because eating it will induce vomiting. Generally, it is very likely that people will drink water constantly during the broadcast to induce vomiting after the broadcast. I also watched an interview video of a big stomach king. He said, when you decide to be a big eater, eating becomes a technical job, and you have to learn how to eat.
You should constantly train yourself to find the skills to break through the limit, even after eating it, it will be very uncomfortable. Therefore, the big stomach king is trained by physical conditions. If he is not fat, there must be something to train or adjust his body after the live broadcast. He can't eat for hours every day. Really not a person. When there is no live broadcast, people must have their own exercise methods. Therefore, if you don't have their professional guidance and understanding, don't try it easily, and something is likely to happen.