It is often necessary to observe in the heat of the summer how young people run with a naked torso. However, you cannot run without a shirt in extreme heat. And that's why.
Salt deposits
When you run into extreme heat, then you sweat much more than even in a bath. It is clear that sweat is released along with salt. But the thing is that sweat in the sun instantly evaporates, but the salt remains on the body. It clogs all the pores, and the skin stops breathing and producing normal heat exchange. Sweat begins to stand out worse, the body cools badly because of this, and gradually the strength will go away and you will not be able to run for a long time.
To prevent this from happening, you must either regularly pour water over your body while jogging to wash off the deposited salt, or run in a T-shirt that will act as a sweat collector. That is, most of the sweat will remain on the shirt, and, accordingly, salt will also be deposited on it. And the body will be able to "breathe" longer.
Danger to burn
If you decide to get a tan by running a cross in the heat, then be prepared for the fact that instead of tanning you can get peeling skin.
When we run, sweat is produced, the main part of which is water. This water works like a magnifying glass for the sun, so ordinary sunlight is amplified by passing through microscopic droplets of sweat. As a result, the skin will not tan smoothly and evenly, but simply burn like an ant under a large magnifying glass.
After such a "tan", the skin from the back and shoulders will peel off either the next day, or it will hold out for another week, and then it will begin to bubble and slither.
Depending on the properties of your skin, the tan, after the skin peels off, either disappears completely, or remains weak. As a result, you will not get a tan. And you will suffer with burnt skin.
So try to run in a T-shirt. You know perfectly well that it is easy to buy a T-shirt in the online store and it will bring a lot of benefits when running in the heat.