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Digestion requires good blood flow and digestion generates heat. If one takes a warm shower, does exercise or goes for a swim, the blood needs to be diverted to the skin surface for cooling purposes. This interferes with digestive process and you can end up having a stomach ache, can faint or even have a heart failure if you are weak.

Though most people would see no ill effects having showered right after a meal, but weak or old people can have a different reaction. So a healthy habit is to wait for about 30 mins after a meal before taking a shower.

The reason someone would faint would be because there is not enough blood flowing to the brain. Digestion requires a high percentage of blood and when you take a warm shower the blood vessels dilate in order to cool down the body by releasing the heat from blood to the skin. More blood flows through those vessels and since so much blood is being used elsewhere the brain may be lacking blood and the bodys reaction to this is to faint because fainting will keep the body level and the blood will flow evenly. This may not affect a lot of people but people with health concerns and also people with bad circulation may have problems.

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12y ago
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13y ago

It is ok to shower after excercise. The most important thing is COOL DOWN 10-15 minutes after exercising, let your heart rate back to normal..

and the temperature of the water shouldn't be very hot or very cold.

Very hot water will dilate the blood vessel and makes you feel dizzy.

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Wiki User

15y ago

The,, "don't swim after eating" is A wives tail, No waiting time needed.

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12y ago

Tanning is bad for your skin because it damages the epidermis and causes skin cancer....so don't.

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8y ago

it doesn't mater. showers unlike baths,pool,and other bodies of water will not give you stomache cramps after eating

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8y ago

As long as you feel well, you can shower right away. Many people wait an hour before swimming, but that doesn't apply here.

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8y ago

There is no correlation between eating and taking a shower. You don't have to wait after eating if you want to bathe.

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Q: How long do you have to wait after eating to shower?
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