How extreme heat affects the body and the human brain
• How extreme heat affects the body and the human brain
Summer is definitely the perfect time of the year - holiday, sea, cycling and so on. But now the heat is not all well tolerated.
And while we feel that we are literally melts from extreme heat, proceed very interesting processes inside our body.
Matthew Kramer - a researcher at the Institute of exercise and environmental medicine in Texas. For many years he has been studying the effect of heat on the human body.
Here is what he says about it:
Our body produces a large amount of heat, which means that it is capable of good self-cooling in very hot weather.
Let's say you went into the room where the 37 ° C. First of all, your skin will start to heat up.
Heated, the skin sends signals to the brain that tell that it's time to sweat, to throw away the excess heat to the environment. They also indicate the brain that should speed up the blood flow, it also helps get rid of excess heat. Such a collaborative effort of various systems of your body is aimed at cooling.
is increased sweating, and blood flow - increased until the body temperature will be equal to its internal temperature. That's why the hotter, the more you sweat.
And what happens if we add to this heat to 37 ° C, for example, humidity, well, or go for a jog in sweatshirt and pants? Cramer says that while your body will most likely not make it. The internal temperature of your body will begin to rise to the point where the body can no longer regulate the temperature.
When the body heats up too much to the body was able to continue to monitor its temperature (this condition is called heat stroke), you start to feel sick, dizzy, or weak (or all at once). It is likely you will float before the eyes of the dark spots that hinder visibility, you may even vomit.
You can occur muscle spasm or swelling of the legs.
And if your body will continue to be subjected to temperature extremes, eventually there is a risk of terminal organ damage - the state, when you have them almost "cooked". From this point, you run the risk of permanent disability or even death.
The good news from Kramer - heat stroke or terminal organ failure - those are not the things that might be encountered, just sitting on the street during a heat wave. Here, a combination of various conditions. For example, if you choose to run 5 km in tridtsatipyatigradusnuyu heat in the clothes, which will retain most of the heat from which your body tries to get rid of, you will incur a risk of long-term damage to the body.
The best way to maintain a temperature at which you feel comfortable, and know your limits when it comes to outdoor use. Your body and mind will tell you thank you for it.