Cold climate, protective contraction of human organs and systems, decreased elasticity and extensibility of muscles, tendons and ligaments, increased viscosity of muscles, reduced range of joint movement, and low air humidity make people feel thirsty and irritable, and feel stiff and difficult to stretch. If you don't do warm-up activities during exercise, it will often cause muscle strain and joint sprain. Therefore, when doing fitness exercises in winter, especially outdoor sports, we should first warm up. After jogging, unarmed exercise and a small amount of light equipment practice, you can warm up your body, sweat a little, and then join the fitness exercise.

Clothing thickness should be appropriate.

First of all, put on more clothes in winter. Clothes should be light and soft, not too tight. After warming up, you should take off some thick clothes. After exercise, if you sweat a lot, you should dry your sweat in time, put on sweaty sportswear, shoes and socks, and wear a hat to prevent heat loss. Besides, when you exercise outdoors, you should pay more attention to keep warm. You will get hotter after exercise, and you always want to cool off, but you must not stand in a windy place to blow. Instead, go back indoors as soon as possible, dry your sweat and put on clean clothes. As the saying goes, "cold comes from the feet", because people's feet are far away from the heart, with less blood supply, thinner subcutaneous fat and poor warmth retention. Therefore, it is particularly easy to feel cold feet when exercising outdoors in winter. If the head, back and feet are cold, cold air will invade the body from fur, nose and mouth, which will not only affect the effect of fitness exercise, but also catch a cold and get sick. At ordinary times, some fitness enthusiasts like to wear fitness shoes for winter, which is not good. Because rubber-soled shoes conduct heat quickly, the soles of feet are easy to catch cold when not exercising, leading to chilblain, arthritis and other diseases.

The environment should be comfortable

In winter, people are used to closing the windows of the gym tightly. As we all know, people exhale more than 20 liters of carbon dioxide per hour in a quiet state. If more than ten people exercise at the same time, one hour is more than 200 liters. In addition, the decomposition products of sweat and the bad gas discharged from digestive tract have caused serious indoor air pollution. People will have dizziness, fatigue, nausea, loss of appetite and other phenomena in such an environment, and the exercise effect is naturally not good. Therefore, when exercising indoors, we must keep the indoor air circulating and fresh. In addition, in winter, it is not advisable to do fitness exercises in the yard filled with oil smoke and turbid air. At the same time, we should pay attention to the weather with poor climatic conditions, such as sandstorm, heavy snow or cold weather, and do not engage in outdoor sports for the time being. If you want to exercise outdoors, you should pay attention to choosing sunny and sheltered places.

Exercise methods should be appropriate.

Due to the cold winter, the body fat content has increased compared with other seasons, and the body weight and body circumference have also increased accordingly. Although this is good for thin people to gain weight, it is not ideal for the development of muscle contour, line and strength. Therefore, winter fitness should improve the intensity and intensity of exercise, increase the number and frequency of exercise, increase the content of aerobic exercise at the same time, and extend the exercise time accordingly, so as to improve the function, develop special qualities, consume body fat and prevent excessive accumulation of fat. In addition, pay attention to shorter exercise intervals, especially standing in cold air for a long time outdoors. If the interval is too long, the body temperature will drop, which will easily make the muscles tired from the excited state and increase the viscosity, which will not only affect the exercise effect, but also easily cause injuries during the next group of exercises.