Running with the intention of losing weight should not be less than 30 minutes at any time, and the speed should be slower to insist on even breathing. 30 minutes of slow running can not only exhaust glycogen in the body, but also make use of fat in the body. Moreover, because the slow running is not very intense, it will not make the body go too far and lack oxygen, so it will help the consumption of fat, and then achieve the purpose of losing weight.

The study of sports biochemistry found that within 5 minutes after running, the heart adjusted to the physical movement, and the heartbeat was obviously accelerated, but the degree was uneven, which was called "heart habit period". After running for 5 minutes, my heart is used to it now. My heart beats strongly and pumps blood evenly. I will adjust it according to the amount of exercise at any time.

Within 30 minutes of running, the glycogen stored in the body first supplies exercise energy, especially muscle glycogen and liver glycogen. Because sugar can be decomposed into carbon dioxide and water under aerobic conditions, a lot of energy is released. After running for 30 minutes, most glycogen is consumed, and the primary energy source is converted into body fat.

When fat is forcibly used, it is first broken down into glycerol and fatty acids. Glycerol can be directly oxidized to provide energy, while fatty acids become acetyl coenzyme A, and then through metabolism, part of it is converted into sugar to provide energy. Because of the high oxygen demand of fat energy supply, when the running intensity reaches the level of hypoxia, it is impossible to supply energy by oxidizing fat.

Suitable for the crowd: jogging is the simplest and most useful way to lose weight, suitable for all kinds of people, whether young people, office workers or elderly brothers, suitable for running to keep fit.

I hope my answer can help you!