It's too hot. How long does it take to walk on the treadmill?

Fitness and running are generally best arranged in the morning, followed by around 9 am and 5 pm. Middle-aged people usually exercise in the morning because of work. First of all, they don't conflict with work. Second, running in the morning has fresh air, which is good for the respiratory system. In addition, after sleep, people's physical strength is restored, but physiologically, people still have a certain degree of inhibition. Morning exercise is beneficial to nerve excitement, mental stimulation, metabolism promotion, and it is of great benefit to maintain abundant spirit and physical strength in a day's work. Some people think that the oxygen content in the morning is low (plant breathing), and the fresh air is only less inhalable particles. At night, people's mental state is the best, so they should exercise around five or six in the evening. It is not advisable to run before or after meals. Running after a meal or eating immediately after running will reduce the secretion of gastric acid, affect the digestion of food, and cause stomach problems over time. Generally, it is better to exercise after meals 1 hour. Running exercise before going to bed is not good, and exercise before going to bed will make the cerebral cortex in a state of high excitement, resulting in adverse reactions such as dreaminess or difficulty sleeping. However, it is not suitable for doing large-scale exercise on an empty stomach in the morning. If the fitness distance is long, you can drink a small glass of sugar water or eat less snacks first.

6-8 am is suitable for exercise.

There are differences in physical conditions between boys and girls, so exercise should not be the same. After collective exercise in the morning, the arrangement in the evening should reflect the characteristics and differences. Boys are strong and can do weightlifting, dumbbells, basketball, football and so on. Girls have good physical flexibility and can arrange gymnastics, aerobics, cycling, swimming and so on. Generally speaking, the suitable exercise time is 6: 00 am to 8: 00 am, 5: 00 pm to 6: 00 pm, and you can have dinner after half an hour of exercise. It is not absolute to exercise for half an hour in the morning and evening. It is best to adjust according to the season. Summer morning is the coolest time of the day, and the exercise time can be longer. It is too hot at night, so the exercise time can be shorter. In winter, on the other hand, the exercise time can be shortened appropriately in the morning and the deficiency can be made up at night. In addition, it is too hot in summer, so indoor sports such as swimming can be arranged more. It should be reminded that exercise is not necessarily healthy. For primary and secondary school students, we should keep 9 ~ 10 hours of sleep every day. If you get up early in pursuit of sports effect, it will be harmful to your health. Adequate sleep, balanced nutrition and proper exercise can only bring people health if they are closely combined. In addition, before exercising in the morning, you must eat some liquid foods such as milk and drinks to avoid going into battle on an empty stomach. Eat well at noon and don't eat fast food easily.