Why do you think I have such a slim figure? It's because I eat fish. Just like the human body, the mermaid's body digests fish very easily. What does that mean? I will tell you using strawberries as an example. You may have noticed that after eating a strawberry, you feel hungry again after just a short while. This means that the strawberry was digested quickly, which means that it is easy to digest. On the other hand, when we eat meat, especially the fatty, the feeling of satiety lasts for a very long time.
It is said that it sits on the stomach for a long time. This is because meat can be hard to digest. Fish meat has protein and fat in it, which the human body can digest quickly. That is why they are good for people who care about their figure. But I think that instead of watching your figure, you should pay attention to what you eat and what nutritional value it has.