Can a Child Bathe Immediately After Playing and Getting Drenched in Sweat? Many People Get This Wrong

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When children run around outside in the summer, they often come back sweating profusely and drenched, as if they had been fished out of water. Many parents, seeing their sticky children,First Reaction is: take a bath quickly to cool off! However, elders often stop you, saying: “ You can’t take a bath right after sweating a lot, it will give you a chill! “

Is this statement based on superstition, or is there some truth to it?

The American College of Sports Medicine (ACSM) recommends: Don’t rush to the bathroom after exercising. Let the child calm down first, and wait until their heart rate is stable and they’ve stopped sweating before taking a bath. Specifically, rest for 10-20 minutes, drink some water, and then take a warm shower (around 37℃) .

Why is it not recommended to shower immediately?

When children run around, their muscles are constantly moving, generating a lot of heat. To dissipate heat, the body activates its cooling mode: blood vessels in the skin dilate, blood flow speeds up, sweat glands work overtime to sweat, relying on the evaporation of sweat to carry away heat .

At this time, the child’s body temperature is high, their heart is beating very fast, and after sweating a lot, the body’s water and salt have decreased, and the blood volume has also become “thinner”. At the same time, most of the blood flows to the muscles and skin, while the blood supply to internal organs such as the intestines is insufficient.

In this state of full load operation, both cold and hot water can catch the body off guard.

Many people feel refreshed after a cold shower, but internally, it’s actually counterproductive.

After exercise, the skin blood vessels are dilated, working hard to dissipate heat. When cold water is suddenly applied, the cold receptors on the skin immediately alert the brain, causing the blood vessels to constrict sharply. The blood that was flowing to the skin to dissipate heat is “squeezed” back into the body, suddenly increasing the “workload” on the heart; at the same time, blood supply to the brain is reduced, children may feel dizzy and see dark spots .

In other words, when you suddenly take a cold shower after sweating profusely from exercise, the cardiovascular system bears an additional load, blood supply to the brain is reduced, and you may experience dizziness and blackouts .

More critically, when the blood vessels constrict, the skin’s heat dissipation channel is “closed”, and the heat inside the body is locked in and cannot be released.

Although children do not have the cardiovascular issues of adults, their hearts are already very busy after intense exercise, and cold stimulation may cause blood pressure to soar and heart rhythm to become disordered. Although most healthy children can withstand it, such unnecessary stress is avoidable.

If cold water is not an option, is hot water okay? Not the best choice either.

After exercise, a large amount of blood in the body is distributed in the blood vessels of the skin and muscles. At the same time, due to the loss of water from sweating, the total blood volume is relatively insufficient. Under these circumstances, the heart’s “venous return” is already at a low level, and the pressure to maintain blood pressure is high.

When a person transitions from an exercise state to standing or sitting, gravity causes blood to further pool in the lower limbs. At this time, the body’s “pressure reflex” mechanism quickly activates: heart rate increases, blood vessels constrict, to maintain the blood supply to the brain. However, after exercise, this regulatory mechanism is already in a “fatigued” state, with slower reaction speeds and regulatory capabilities than usual.

At this point, when hot water is applied, the skin blood vessels will further dilate and relax, causing more blood to pool in the skin and limbs, and less blood returns to the heart. The heart cannot pump out enough blood, blood pressure drops, and the brain is not sufficiently supplied with blood, causing children to feel dizzy, palpitations, and cold sweats. In severe cases, they may faint directly. Medically, this is called “postural hypotension” or “post-exercise syncope”.

It is important to note that children’s temperature regulation and cardiovascular systems are not yet fully developed, and they are more sensitive to cold and heat stimuli than adults. Moreover, children often play until they are exhausted before stopping, and their physical burden after exercise is greater than that of adults. What’s worse, children do not communicate their discomfort in time, and by the time parents notice their pale complexion, they may be on the verge of fainting.

In summary, the elderly’s advice not to take a bath right after sweating profusely does have some merit.

The issue is not with bathing itself, but with the body being in a “special period” after exercise: fast heart rate, thin blood, and dilated blood vessels . At this time, the temperature difference caused by either cold or hot water can cause blood vessels to “malfunction” –

What’s the better way to do it after exercise?

The correct approach is to rest first, then drink, and finally take a warm shower. That is to say, after the exercise is over, don’t rush to the bathroom. Follow these three steps:

Take the child to a cool, well-ventilated place (avoid direct air conditioning) , and wipe off the sweat. Take a slow walk for a few minutes, then sit down to rest . Wait until the child’s breathing is stable, their heart rate is not fast, their sweat has mostly dried, and their skin does not feel hot to the touch, then take a bath.

While resting, hydrate the child by taking small sips of water. As mentioned earlier, excessive sweating can dehydrate the body and thin the blood, and dehydration is an important cause of dizziness after exercise. Drinking enough water makes bathing safer.

For further reading👉: Is it enough for children to drink plain water after exercising and sweating a lot? Do they need to replenish salt or sugar?

Adjust the water temperature to be similar to body temperature, test the water temperature with the inside of your wrist, it should feel warm, neither cold nor hot . This temperature will not cause blood vessels to constrict sharply (like cold water) , nor will it cause blood vessels to dilate excessively (like hot water) , which can both clean the body and not cause trouble for the heart.

Pay attention during the shower: if the child says they are dizzy, want to vomit, or if their face turns pale, they can’t stand firmly, let the child sit down or squat immediately, and if necessary, carry them out of the bathroom and lie down. Don’t force them to finish the shower.

After the bath, dry off with a towel, put on dry clothes, don’t run around to play immediately, and don’t go into an air-conditioned room with a low temperature. Rest for a while longer.

Although serious incidents caused by children taking a bath directly after exercise are not common, since there are better ways, why take the risk?

Disclaimer: The article is intended to provide general health information. For personal medical issues, please consult a doctor. To reprint the article, please contact: medicine@distinctclinic.com.