Why do I feel cold after urinating?

This is a person's physiological reflex, which can also be said to be instinct, a person's inherent physiological muscle energy and conditioned reflex. This physiological reaction is commonly known as a cold war.

This situation also occurs more often when urinating when there is sufficient urine. The human bladder stores urine, and the muscles that control excretion are in a relaxed state at first. Then sudden tension and exertion trigger a reaction in the nervous system. So trembling.

In fact, this phenomenon is easy to understand. When urine is stored in the bladder, it inevitably absorbs part of the body's heat. When these calories are excreted in the urine, the pituitary gland controls thyroid secretion. Thyroid stimulating hormone.

Everyone knows that thyroid hormone is a way to keep us cold. When we are cold, we will feel goosebumps on our bodies. This is because thyroid hormone stimulates the subcutaneous arrector pili muscles and causes hair follicles to become colder. Shrinking, the hair stands up, forming a layer of air on the surface of the skin to keep it warm, followed by shivers. ?

When the body temperature drops after urinating, thyroid hormone is inevitably secreted, causing the above situation. You can feel it carefully. After urinating, there will be a numbing feeling spreading from the neck upward to the scalp. It doesn't spread too far into the countryside, it can reach the hands, that's the effect of thyroid hormone, and the reason it starts in the neck is because the thyroid gland is in the neck.

If you pay attention to children (especially little boys), they often shiver when they urinate. Even when the weather is very hot in summer, children tend to urinate in a hurry (forgetting to play) Suddenly I remembered, and I quickly took out the little sparrow to urinate. Due to the sudden release of a large amount of urine, the pressure in the bladder part felt quickly released, and it was easy to shiver or a few times.) In fact, a similar situation will happen to female children, but not in the same way. Easily visible.