One mouthful of water equals one drop of urine? Why do you want to pee as soon as you enter the swimming pool?

For people who are swimming or playing in the water, the longest distance in the world is the distance from the swimming pool to the toilet.

Therefore, in order to avoid this distance, many people simply relieve themselves quietly in the swimming pool. As long as the urine is not yellow, others will not notice it.

Don't be surprised, this is true! Even Olympic champion Michael Phelps has admitted that athletes often relieve themselves in the swimming pool.

A study once showed that 1 in 6 people have urinated in a swimming pool.

Therefore, in the midsummer, the urine content in an ordinary swimming pool, which is as full as dumplings, may be beyond your imagination.

A research team from the University of Alberta in Canada tested water samples from 87 swimming pools in two cities, including entertainment centers, hotels and private residences, and came to a conclusion:

Nearly 0.01% of the water in a swimming pool is urine!

For example, if this is a swimming pool equivalent to 1/3 of the Olympic standard, with a total capacity of 832,000 liters of water, then there are about 75 liters of urine in it, which is equivalent to 150 500 ml water bottles.

If you still don't have a clear idea of ​​what this means, let me give you a simple example: the ratio is roughly one bottle of water to one drop of urine.

Besides feeling a little nauseous after seeing this, you may also wonder: Is so much urine in the swimming pool harmful to the body?

In fact, the urine of healthy people is sterile, and there will be no effect even if disinfectant is not put in the swimming pool. However, once urine comes into contact with disinfectant, a chemical reaction will occur, which will have a certain impact on the human body.

Every time you go to the swimming pool, can you smell the "disinfectant"?

This is not the smell of real disinfectant, but the smell of a series of chlorine-containing volatile substances such as dichloramine, trichloramine, and cyanogen chloride produced by the chemical reaction between the main ingredient of the disinfectant, hypochlorous acid, and ammonia in urine.

So, to round it off, the smell of a swimming pool can be equated to the smell of urine.

The most volatile of these is trichloramine, which can cause inflammation in the eyes, skin or respiratory tract if people are exposed to it for a long time. This is why swimming pool staff and swimmers are more likely to suffer from asthma.

The best solution is not to urinate in the swimming pool.

ask

So the question is, why do so many people pee in swimming pools?

This is because it is really easy to feel the urge to pee once you enter the swimming pool.

answer

Many people have had this feeling: they have emptied their urine before swimming, but they feel like peeing as soon as they enter the swimming pool.

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Why do I have to pee as soon as I get into the pool?

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❶ This is because of the change in temperature, which is similar to the principle of frequent urination when the weather is cold: under the stimulation of cold water, the blood vessels on the surface of the body contract and the blood flow decreases accordingly, so that excess blood appears in the arteries, and the body's pressure receptors respond, causing the kidneys to excrete excess water.

At the same time, low temperatures also inhibit the secretion of antidiuretic hormone, causing some of the water that could have been reabsorbed by the kidneys to rush into the bladder. As a result, the unstoppable urge to urinate comes in waves.

❷ Secondly, the semi-weightless state of the body after entering the water and the water pressure will also cause the blood in the limbs to concentrate in the torso. At this time, the increase in blood pressure will also be interpreted by the body as "too much water". This phenomenon can be called "immersion diuresis."

❸In addition, there is a non-physiological factor that may be the conditioned reflex of the brain. The sound of water in the swimming pool will make it more difficult for the urethral sphincter to hold. After all, this stubborn conditioned reflex has existed since infancy when people were holding their bladders to urinate.

But the above are not reasons to pee in the swimming pool. If you have to pee, you should hold it or go to the toilet!

In addition, remember to take a shower after swimming, because you can control yourself but you may not be able to control others!