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That's because there's dirt left in the crevices.
Just brush it thoroughly with toilet cleaner.
Intestinal problems... Eat some laxative food, bananas, lotus roots, and pears >>>More
Constipation. There may be several reasons for this, please refer to: >>>More
After drinking, the kidneys' water dilution function is weakened, which leads to a decrease in urination.
Urination is a complex process in which the brain and related nerves directly innervate the bladder, and the bladder contracts to expel urine. Babies born in the first few months have a thin bladder muscle layer, imperfect elastic tissue development, poor urine storage function, poor nervous system control and regulation of urination, and poor kidney concentration function of urine. In general, babies who eat cow's milk urinate a little more than babies who eat breast milk, but this varies greatly from child to child. >>>More
The excretion routes of human metabolic wastes are one is defecation, the second is urination, the third is exhalation, and the fourth is perspiration, especially the first two ways are the most important. If not going to the toilet for a long time refers to constipation, then it is very important to increase the amount of water you drink to have enough urine; The other is to actively prevent and treat constipation.