Postpartum abdominal relaxation is often caused by the separation of rectus abdominis. I suggest you test yourself in this posture first: supine, legs bent; Expose the abdomen, lift the upper body, and hold your breath hard in the abdomen; The index finger and middle finger of the right hand extend into the abdomen, and feel that the abdominal muscles on both sides squeeze the fingers to the middle, and measure the distance between the muscles on both sides.
For mild flabby type: a small amount of subcutaneous fat accumulates, rectus abdominis is is slightly separated, scattered in skin stripes, and the skin is flabby. This type can be recovered by controlling diet, eating less and eating more meals, and exercising.