In addition, proper exercise in winter will generally accumulate some chill in people who are particularly afraid of cold. Only by removing the cold can the body be warm inside. If the inside of the body is cold, put on more clothes and it will be cold.
Supplementary explanation; Pay attention to clothes to keep out the cold;
Generally speaking, outdoor clothes wear three layers. They are usually called inner clothing, warm clothing and outer clothing.
You don't have to wear these three layers of clothes on all occasions, but these three layers of clothes can be combined with each other or used alone to cope with complex environments. Before each departure, you can freely match according to the weather conditions of the destination.
underwear
The main purpose of underwear is to keep the skin surface dry, not stuffy, and it has a certain warm-keeping effect, so its main function is to sweat the clothes. It should be able to quickly discharge moisture and sweat to the surface of underwear, so that sweat will not directly evaporate on the skin surface, and the temperature of the skin surface will decrease due to the heat absorbed by water vapor evaporation. Cotton underwear absorbs water strongly and does not dry easily. When wet, it becomes a heat conducting layer, which accelerates heat dissipation. Therefore, cotton underwear is not suitable for outdoor activities except in hot weather. It is best to choose a major.
Sweating underwear. Sweat-wicking underwear should not be loose, but should be close to the skin without being tight, so as not to affect warmth or freedom of movement. The materials often used to make Paihan underwear are CoolMax, Thermastat and so on. CoolMax is a kind of modified polyester fiber of DuPont, which has good perspiration and breathability, strong acid and alkali resistance and ultraviolet resistance. Its disadvantage is that the high proportion of CoolMax fabric has low bursting strength and is easy to pilling. CoolMax products are the best choice in places with high humidity or not too cold. Thermastat is also a kind of polyester fiber, and its hollow structure makes it better than CoolMax in warmth retention, so it is more suitable for wearing in low temperature environment.
Warm layer clothing
Warm layer clothes keep the body warm through the air wrapped inside. The thicker the accumulated air layer, the better the thermal insulation effect, so wearing a few light and loose clothes will keep you warm than a single piece, because the accumulated air insulation layer of the former is thicker. Down products are recognized as the best insulation layer, and they are easy to compress, light in weight and easy to carry. But its disadvantage is that it is easy to get wet and not easy to dry, and its warmth retention is greatly reduced after absorbing water. Based on these characteristics, down jacket is not suitable for outdoor sports (especially when walking with load) as a warm layer, but suitable for resting or walking in general. When buying down jackets, you should pay due attention to fabrics and styles, and the fabrics should be breathable to prevent tearing. The style should be easy to move. Although the style is too small, it looks good, but it has poor insulation when worn outside. You'd better wear a big cap. Wool products have poor wind resistance, are easy to absorb dust and are afraid of insect bites. When wet, they are not easy to dry and will become much heavier. However, its excellent warmth retention under dry conditions makes it valuable in outdoor activities. Wool products are the most popular man-made materials at present, and their performance basically exceeds that of wool products. It is a lightweight and excellent thermal insulation product, which can be widely used. Although its disadvantage is poor wind resistance, it still has heat preservation effect under slightly wet conditions, and it is very easy to dry, so it is very suitable for being used as the intermediate heat preservation layer for outdoor sports. With the appearance of new wind-proof fleece, the disadvantage of poor wind resistance of fleece products has been greatly improved. WindStopper has good wind resistance, is completely breathable, and can be worn as a coat in windy weather with low temperature.
Coat clothing
Coat clothing is the most important and classic part of outdoor sportswear. Both the inner and outer layers need this layer to make up for the deficiency, so the most important function of the outer layer is waterproof, windproof, warm and breathable, which can not only minimize the impact of bad weather on the body, but also discharge the water vapor generated by the body and avoid the condensation of water vapor (sweat) in the middle layer, which reduces the heat insulation effect and cannot resist the low temperature or cold wind of the external environment. In most cases, jackets are used as the outermost clothes. This kind of jacket was first used when climbing high-altitude snow-capped mountains. When the last charging distance is 2-3 hours before the peak, the down jacket will be taken off, and the big backpack will be removed, wearing only one coat. This is also the origin of its name. Later, due to its excellent performance, it became the standard for all outdoor sports. The ideal jacket is wind-proof, rain-proof, breathable, wear-resistant, tear-proof and easy to move. In order to prevent rain, jackets are usually equipped with hats, and waterproof and breathable fabrics are used (the so-called waterproof and breathable material means that the inner layer of the fabric is coated with a layer of back glue, and there are many small holes with diameters between water molecules and water vapor molecules on the back glue, which can discharge water vapor but rain water cannot penetrate, thus solving the contradiction of waterproof and breathable.