Let's start with the first one. In sports, physical strength is divided into two stages. The first stage is that the sugar you eat is absorbed and decomposed into muscle glycogen stored in the blood, and the excess that cannot be metabolized will be converted into fat and stored in the body. In the second stage, when the first physical exertion is completed, you will start to consume fat, that is, the fat on your body.

The second kind of physical strength is embodied in the sprint of 100 meters. At this time, you will use your second physical strength, that is, the scientific name ATP. When the average person consumes this energy, it can last for 4 to 6 seconds, and some athletes can last for about 8 to 15 seconds. When people use this energy, lactic acid will be produced in the blood. People with good physical strength won't feel anything, but people with poor physical strength may.

Answer finished, hope to adopt.