Cereal is ok, eggs are not, but eating one or two eggs for breakfast is more balanced. Oatmeal is rich in cellulose and can lose weight, because cellulose can promote gastrointestinal peristalsis. Although it belongs to polysaccharide, the human body will not absorb cellulose. Cellulose can also "adsorb" fat and take it out of the body. But eggs are rich in protein, and protein is an organic macromolecular structure, which is not easy to digest (as for why it is not easy to digest, protein is like a tangled rope, and it takes some efforts to decompose and absorb it). It is ok to eat some supplementary nutrition properly, but it is not advisable to eat more.

If you want to get rid of your stomach, just pay attention to the lack of diet and strengthen exercise. I suggest you do flat support. If you can persist for more than 5 minutes, you don't have to worry about losing your stomach, but you should step by step. Generally, you can only do it for about two minutes at first. Be careful not to be too reluctant, or you will know the consequences the next day. Simple sit-ups are also possible, but if conditions permit, leg lifts with ribs are very effective.