First of all, from the photos of my aunt when she was a child, when she was about five years old, it was enough to see that she was fat since she was a child, and she was still fat when she was a teenager, but at the age of 28, she suddenly became a thin beauty, but this state did not last long. The 48-year-old 68-year-old aunt is still a fat woman, which shows that being fat is her normal state, while at the age of 28, she is thin.
Secondly, in One Piece, there is actually a related explanation. My aunt in her twenties felt that she was in poor shape, and just learned that a kind of fruit can make people thin and beautiful, so she tried her best to find this kind of fruit and finally became a beautiful woman by virtue of its efficacy. That's why she suddenly turned 28. Transformation? . However, the effect of this fruit is limited, and it will gradually fade in about five years, so my aunt returned to obesity when she was about 32 years old.
Finally, it is not unreasonable for menstruation to get fat. My aunt has given birth to many children, and every time she gives birth to a child, she will try her best to supplement herself. So she will gain a few pounds when she gives birth. You know, in One Piece, she gave birth to more than 40 children, so they add up to nearly 50 Jin, which is why she gets fatter as she gets older.