Body Cooling and Overheating
Essentials in Body Cooling
Close to all body heat is produced and retained in the core torso area of a human or most mammals, for that matter. The extremities like the hands and feet loses body heat first because the core contains all the vital organs of humans, however, without proper body cooling, the body can overheat quickly just as fast.
As the body moves and exerts effort, the amount of body heat increases, as warm-blooded creatures, our body has a way to maintain a constant core body temperature. We sweat to remain cool, dogs pant to keep cool, but if the ambient temperature, humidity, and other environmental factors, our body’s ability to keep the safe temperature will fail.
Evaporative Body Cooling
When the ambient temperature increases, the difference between our skin’s normal temperature and the atmosphere gets smaller and smaller. When the ambient temperature rises beyond the point of the body’s capability to let the internal heat to get released by convection, the body, overheats.
Sweating, by itself, is an evaporative body cooling process. The sweat gets exposed to the air, particularly dry air, the water evaporates into water vapor and it is highly effective.
The problem with perspiration is when humidity is high, the sweat isn’t able to evaporate from the skin, and the sweat starts to block the pores and inhibit the heat from escaping the body. The result is overheating.
Convective Body Cooling
Normally, when our body overs around 60º to 80º F ambient temperature, the circulatory system transfer the core heat toward the skin’s surface. As body heat transfers from warm to cold, rather than the other way around, the heat of our body gets blown away as the cooler outside air passes over our skin surface.
This is called convective cooling, since the heat is removed by the movement of air. It’s similar to evaporative, but with the aid of the wind.
How Cooling Vests Optimize Your Body Cooling?
Cooling vest, whether they are evaporative, phase change, or active cooling vests act on the same manner. Evaporative cooling vests work by using cold packs close to the core to bring heat away via evaporation. As the cold pack draws the heat from the body, the melting of the ice evaporates the brings the body temperature down.
Phase change cooling vest does the same thing but with a more efficient heat transfer system rather than plain ice.
Finally, active cooling vest uses a combination of a constantly moving cooling source, like a radiator system that transfer heat away from the body.
Whichever body cooling product you choose, make sure you check out our cooling vest reviews for the best option.