Thursday, May 26, 2011

why do people sweat more in chennai???

One of the famous ornament of chennai is its summer!. Everyone here would have at least once talked about its effect and the way they affected. People comes out with sweats flowing from the body is the usual scene of chennai noon. The sweat produced is not just due to the temperature of the region. It is in fact due to the high humidity of chennai.

To explain this lets see a fact, people in chennai sweats more than the people in delhi where the temperature is higher than the former.

This is because of chennai's location. Chennai is located near sea due to which sea water evaporation is high during summer which in turn increases the humidity (Amount of water vapour present in air).
Normally human blood temperature is about 35 deg Celsius. If the outside temperature is more than that, then our system tries to automatically cools down by releasing sweat from the body.

The sweat which is released cools the surrounding heat by converting into vapour thereby reducing the body temperature. Here the Humidity comes into effect. Cities like chennai has humidity of around 95% resists the sweat to be converted into vapour. So the body temperature doesn't cools down and increases more amount of sweat from body.
The increase in body temperature causes reduction in blood flow to the brain which makes us feel tired. To overcome this we drink lot of water and juices during summer to make us cool.

Sweating is not seen in reptiles like snake because it changes its blood temperature with the surrounding temperature. So it can roam around at hot sun without getting tired. Better than us isn't it?.


-- Guest post by Gokulesh - @gokuleshwrites