Working people generally walk 3000 ~ 4000 steps every day. If you hurry to walk, go up and down the stairs, and take a walk during the break, you can generally add 2000 more steps. In other words, we need to consciously complete the walking task, in fact, only about 4000 steps, 30 ~ 40 minutes can be completed. In order to relax more, the 40-minute walking task can be subdivided into three parts: morning, middle and evening. The walking time is about 15 minutes, and the journey is about 1 km. And seemingly monotonous walking tasks can also become interesting and diverse, such as walking in circles, sightseeing, visiting supermarkets, walking dogs and so on.
In fact, it doesn't matter if the knee is not uncomfortable. Professor Hu Dayi, the chief expert of health education in the Ministry of Health, said that brisk walking is the safest, simplest and most economical aerobic exercise, so it is recommended to choose brisk walking. From the point of view of joint wear, the slower the speed, the less wear and the less pressure between cartilage. However, under normal circumstances, the human body has a certain self-repair ability, and only exercise beyond self-repair ability will cause harm to the body. Therefore, if you are not a person with serious joint strain, walking fast is better than walking slowly. If the joint itself is damaged, try not to climb stairs or mountains. Because climbing stairs is a kind of weight-bearing exercise, the weight borne by the knee will increase to about 4 times at the moment of climbing. The faster the speed, the greater the pressure on the knee.
Besides running, other sports also produce endogenous cannabinoids, which explains why some people feel uncomfortable without exercise for a day. Because exercise can really make people happy. Professor O 'Sullivan believes that "endogenous cannabinoids" is a reward mechanism established by the body to encourage exercise.