As the summer heat gradually escalates, the hot weather not only tests our endurance, but also puts forward higher requirements for our clothing choices. In the face of the scorching sun, how to dress to achieve the best heatstroke prevention and cooling effect, today, I will use some relevant knowledge to tell you how to wear it in summer to be cooler. And provide you with some practical summer do's and don'ts.
First, we need to understand an existing misunderstanding: "the less you wear, the cooler you get". In fact, wearing less is not necessarily cooler; In the hot summer months, reducing clothing can do a little bit to reduce the perceived temperature, but in reality, this view is not comprehensive. Studies have shown that when the outside temperature is higher than the surface temperature of the human body (about 36°C to 37°C), wearing less does not necessarily lead to better heat dissipation, but may increase the risk of heat stroke due to excessive exposure to the sun. This is because our body's heat dissipation mechanism is far more complex than you think.
Second, the heat dissipation mechanism in our body and the general clothing choice;
We know that the heat dissipation methods of the human body mainly include radiation heat dissipation, conduction heat dissipation, convection heat dissipation and evaporative heat dissipation. Among them, in the high-temperature environment, the effect of radiant heat dissipation and convection heat dissipation will be greatly reduced, and evaporative heat dissipation has become the main heat dissipation method. At this time, the choice of clothing is particularly important.
For example, when the outside temperature is low, wearing less can increase the effective heat dissipation area and promote radiant heat dissipation. However, in high temperatures, wearing less may cause the body to absorb more heat; Secondly, the thermal conductivity of the clothing material will affect the heat dissipation effect. Poor conductors of heat, such as flax, silk and other materials, can reduce the transfer of heat to the skin; In addition, loose-fitting clothing and breathable fabrics promote air circulation and enhance convection heat dissipation; In addition, moisture-absorbing and breathable clothing can accelerate the evaporation of sweat, which can take away heat from the body's surface.
3. In the scorching summer, we choose summer clothes scientifically through the "four looks";
1. Look at the fabric material: natural fiber products such as linen and silk are preferred, which have good hygroscopicity and strong air permeability, which helps sweat to evaporate quickly. Thin cotton fabrics and worsted thin wool fabrics are also good choices. According to a research report, "Linen clothing can effectively reduce the skin temperature by about 2°C at high temperatures, and its moisture absorption properties make the wearer feel drier. “
2. Look at the fabric structure: Knitted fabrics have their larger voids and better air permeability, which can be the best choice for summer dressing.
3. Look at the clothing version: The loose fit can increase the air layer between the fabric and the skin, and promote convection heat dissipation.
4. Look at the color of the clothes: dark clothes absorb heat quickly, and when you are outdoors for a long time, choose light-colored clothes to reflect more sunlight and reduce heat absorption. However, when the temperature difference between morning and evening is large or in a cool place, the good thermal insulation performance of dark clothes can play a certain role in protecting our human health and avoiding cold in the hot season.
4. In addition to the scientific selection of clothing, the following summer precautions are equally important:
1. Drink plenty of water: The human body is prone to sweating in hot weather, which leads to dehydration, so it is necessary to maintain adequate water intake. It is recommended to drink at least 8 glasses of water a day and avoid excessive consumption of sugary drinks and alcohol.
2. Avoid going out during hot periods: Try to go out in the morning or evening and avoid exposure to strong sunlight at noon. If you must go outside, take sun protection measures such as wearing sunscreen, a hat and sunglasses.
The picture comes from the Internet
3. Keep indoor ventilation: Even if you use air conditioners or electric fans, keep the indoor ventilation good to avoid long-term airtightness that will lead to a decrease in air quality. At the same time, clean the air conditioner filter regularly to reduce the growth of bacteria and viruses.
4. Reasonable diet: In summer, you should eat more light and easy-to-digest foods, such as vegetables and fruits and other foods rich in vitamins and minerals; Avoid eating too much greasy and spicy food to avoid burdening your body.
5. Pay attention to body signals: once you have symptoms of heat stroke such as dizziness, nausea, and fatigue, you should immediately stop activities and go to a cool place to rest; If symptoms continue to worsen, seek medical attention promptly.
The picture comes from the Internet
For children and the elderly, due to their relatively weak ability to regulate body temperature, more attention should be paid to avoiding direct exposure to sunlight and wearing lightweight, breathable, and sunscreen clothing; For outdoor workers: choose professional sunscreen clothing and breathable work clothes, and wear protective equipment such as sun hats and sunglasses to reduce the damage of high temperatures to the body. For the general population: according to the temperature of the day and the length of time you go out, it is important to wear reasonable clothing, neither too exposed nor too stuffy, and keep your body comfortable.
To sum up, dressing in summer is not simply "the less you wear, the cooler", but needs to be comprehensively considered according to the human body's heat dissipation mechanism, external environmental conditions, personal needs and other factors. By scientifically choosing the material, structure and color of clothing, and following summer precautions, we can better cope with hot weather, stay cool and comfortable in the hot summer days, and maintain good health.