1, physical exercise can improve human immunity.

Long-term regular physical exercise can improve the circulating function of immune cells, especially cells of non-specific immune system, including natural killer cells, neutrophils and macrophages, thus improving human immune ability.

The nutritional status in vivo required by exercise, such as protein, amino acids, sugar, zinc, iron, vitamin A and vitamin C, will affect the immune function, resulting in an increase in the number and function of T, B cells and phagocytes, an increase in the synthesis and secretion of cytokines, and a decrease in the incidence of infectious diseases.

Lipid nutrition for sports can directly affect the function of immune cells by changing the lipid composition of cell membrane. All this requires long-term systematic exercise and a healthy lifestyle of scientific and moderate exercise, which is also a wake-up call for each of us in this epidemic.

2. Physical exercise can comprehensively improve human health.

Constitution refers to the quality of the human body. Regular physical exercise can comprehensively improve human health from three dimensions. The first dimension is to improve people's body shape, including people's height, weight, height, weight ratio and so on.

The second dimension is to promote human physiological functions, including motor system, circulatory system, respiratory system, digestive system, nervous system and so on.

The third dimension is to improve people's physical quality and basic activity ability, including speed, strength, endurance, agility and flexibility, as well as people's sports ability such as walking, running, jumping, throwing, climbing, climbing and swimming. Through systematic physical exercise, we can comprehensively improve the health level of human body and improve the adaptability of human body to nature.

The ways to exercise at home during the epidemic are:

1, children and adolescents

Because children and adolescents are lively and active by nature, exercise at home should follow the principles of safety, science, moderation and diversification. Exercise should be moderate. It is recommended to focus on medium and low intensity, and the body can sweat slightly. Pay attention to keep warm and rest after exercise. It is suggested to do 15~20 minutes of family fitness in the morning and evening to prevent obesity and myopia.

Children's exercises are mainly sensitive, flexible, coordinated and balanced exercises, such as listening to commands, such as standing on one foot, throwing the ball, drilling holes, pushing cars, jumping grids and crawling.

Teenagers can participate in speed, small strength (such as their own weight) and cardio-pulmonary endurance exercises, such as left and right point running, arm jumping, standing, opening and closing jumping, leg lifting, bobby jumping, supine riding and so on. If possible, you can practice dumbbells or elastic belt at home. Each movement lasts for 20~30 seconds and is divided into 2~4 groups according to physical fitness.

2. Adults and the elderly

It is suggested that adults with good physical fitness and good physical exercise habits should carry out high-intensity interval training, which can improve cardiopulmonary function and basic strength quality, and at the same time achieve good exercise effect in a short time. For example, you can do some in-situ running, push-ups, opening and closing jumps, bobby jumps and so on. And each action is practiced 10~ 15 times, 2~4 groups.

Old people and some adults who lack physical exercise suggest functional exercise and flexible and balanced exercise to improve their quality. Stretch and rotate the muscles in key parts such as shoulder, neck, waist and back. The stretching time of each group lasts about 20~30 seconds and is divided into 2~4 groups. In addition, you can also practice some supine back bridge, Little Yin Fei, etc.

Guangdong provincial sports bureau-experts and scholars talk about fighting "epidemic situation"-sports is a kind of life education