(Theme: Insist on Exercise to Enhance Physical Fitness)
(h): Hello, dear teachers and dear friends! The red scarf radio is meeting you again.
(Male) I'm the host Lu.
(Female): I'm the host, Yang Shuangyu.
(m): The theme of this red scarf broadcast is-keep exercising and strengthen your physique.
(female): As the saying goes, "Practice three volts in summer, and practice three or nine in winter"; Exercise more in winter, get sick less, be lazy in winter, and drink more medicine. It can be seen that winter exercise is very beneficial to our health.
(Male): "The flowers and plants in the greenhouse can't stand the wind and frost", and so can the human body. Gradually improve adaptability and resistance in physical exercise. Exercise is the best way to get in touch with cold. Facts have proved that when we go outdoors to participate in sports activities in winter, our bodies are stimulated by cold, and our muscles and blood vessels are constantly contracting, which can accelerate our heartbeat, deepen our breathing, strengthen our metabolism and increase the heat generated by our bodies, thus enhancing our ability to resist the cold.
Female: Children's outdoor sports in winter can often be stimulated by cold, which can enhance their resistance to common diseases such as colds and tracheitis in winter. Being exposed to sunlight outdoors in winter, ultraviolet rays in sunlight can not only promote the hematopoietic function of human body, but also play a positive role in the treatment and prevention of anemia, and can also promote the absorption of calcium and phosphorus by human body, which is beneficial to the growth and development of bones.
M: In addition, ultraviolet rays in sunlight can kill viruses and germs on human skin and clothes, and have a disinfection effect on human body. Our children are in a critical period of growth and development. Winter exercise is not only conducive to the healthy growth of the body, but also plays a positive role in improving learning efficiency, developing personality and exercising will.
(Female): It's the right time to exercise in winter. Physical exercise can improve people's ability to keep out the cold. Therefore, people who insist on winter exercise have 8- 10 times stronger cold resistance than ordinary people. Outdoor physical exercise in winter is constantly stimulated by cold air, the antibodies against diseases in the blood increase, and the body's resistance to diseases increases. Physical exercise in winter receives sunshine to make up for the lack of sunshine.
(m): Especially for growing teenagers, it is more important to take part in outdoor sports. Physical exercise in winter can also accelerate blood circulation and increase the oxygen supply to the brain, which has a positive effect on eliminating fatigue caused by long-term work of the brain, enhancing memory and improving learning efficiency. There are many benefits of winter exercise, and there are also many items of winter exercise. Generally, we use long-distance running, ball games, skipping rope and kicking shuttlecock. This can be flexibly mastered by choosing different projects according to personal hobbies.
(Female): Winter sports have so many benefits. So, what should teenagers pay attention to in winter physical exercise?
(m): We should be prepared to prevent sports injuries. In winter, the temperature is low and the body becomes stiff. When people are indoors and outdoors, the temperature drops suddenly, which will make the skin and muscles contract immediately, the joints and ligaments become stiff, and the metabolism in the body slows down. In this case, if you start exercising immediately, it may lead to muscle strain or joint injury, and because of the rapid heartbeat, it may also lead to nausea, vomiting and other symptoms that are not suitable for www.99zuowen.com. Therefore, we should be prepared to let all the muscles and joints of the body move, and the internal organs, especially the heart, enter a state of adapting to exercise. Be warm when preparing for activities, so that you will feel strong, energetic and not afraid of the cold when you start activities.
(Female): Beware of sports injuries. In winter, under the stimulation of cold, the viscosity of human muscles and ligaments will increase, which will reduce the elasticity and extensibility of muscles and the physiological activities of each joint. Therefore, before each exercise, we must pay attention to making full preparations to prevent the joints or tendons of the body from being damaged.
Breathe normally. It is cold, windy and dusty in winter. Therefore, don't take a big breath during exercise, but use the method of nasal cavity or nose-mouth mixed breathing to reduce the adverse stimulation of cold air on the respiratory tract.
Prevent colds and frostbite. In winter sports, the exposed hands, face, nose and ears should be rubbed frequently to promote local blood circulation, and an appropriate amount of anti-freezing cream, anti-frost and grease should be applied to prevent skin frostbite.
(Female): Clothes should be increased or decreased in time. After getting ready for the activity, if you feel that your body has started to have a slight fever, you can take off your heavy coat appropriately to facilitate your physical activity. After exercise, you should put on your coat to keep warm in time, which can also prevent cold air from invading your body through pores on your skin and causing cold symptoms.
(Male): Master the appropriate amount of exercise. Winter exercise should be arranged reasonably according to the weather and personal health. In exercise, we should step by step and do what we can, and the duration of exercise should not be too long. The exercise heart rate of our primary school students should be controlled below 150 beats/min. At the same time, strong winds and dense fog are not suitable for outdoor sports.
(female): There are also requirements for diet:
1, drink more water. Getting up early in the day, 10 am, 3 pm and before going to bed are the four "best drinking times". Take the initiative to drink water, and drink it when you are thirsty, especially boiled water.
2. Pay attention to the appropriate mix of coarse grains, vegetables and fruits. These foods are rich in vitamins, minerals and dietary fiber. It is beneficial to keep out the cold in winter, prevent constipation and protect cardiovascular health.
(Together): As the saying goes, "Exercise more in winter and get sick less; Lazy in winter, drink a bowl of medicine. " Students must exercise more, love sports, keep exercising and strengthen their physique. Let's feel the joy of exercise and study together.
(e): This is the end of the red scarf broadcast. Thank you for listening. Goodbye, teachers and students!