No one can claim that he's oblivious of the fact that we tend to urinate more and often during cold weather. Yes you heard me right!

But why is it so?
Well let me address the question once and for all.

First! How does the body react during cold and hot weather with regard to even temperature distribution through out the body.

But then when does one feel warm and cold?
I mean how does the body cope with hemostasis, to sound less complex the regulation of the body's temperature in order to attain and maintain a fairly constant temperature rate.

The blood and the skin see to that.
The blood cell does its by even distribution of blood around the body to ensure an even body temperature.
To be precise, the blood disperse the temperature of a particular part of the body to all other parts of the body. The skin does its as body temperature regulator

The body is usually warm on a hot day as a result of heat from the sun and high metabolic activity in the body. When the body is warm, there's a stimulation for sweat production and this is due to the high metabolic activity of the liver which heats up the body.

For the sweat to be evaporated from the body, latent heat of vaporization is derived from the body and thus the body's temperature is continually reduced as the sweat evaporate.
This and cold weather bring about the sensation of cold stimuli while hot weather and high metabolic activity within the body lead to warm sensation we feel.

Acknowledging this, it's also important to understand how the body dispose sweat in each atmospheric condition and thus why we urinate much and often during cold weather or atmospheric condition than the warm one.

During hot weather, the skin helps the liver dispose excess salt or sweat produced by the sweat gland through body sweating because the sweat gland is highly active and produces high amount of sweat.

Unlike hot atmospheric condition, the sweat gland is inactive during a cold day and produces very little sweat. The effect of this is a drastic reduction of heat or sweat loss through evaporation. Not only does this result to body heat conservation but also result to the skin not excreting excess salts or sweat and then the sweat become excreted by the liver as urine.
That's why we urinate much and often on a cold weather or day.

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