Get ready for exercise first, stretch your muscles and avoid sports injuries. Mainly running. The speed is increasing. Of course, don't care too much about speed at first, and stick to running time. It is not recommended to go to the gym for the first time, but to focus on aerobic exercise, and then look at the actions of the old fitness experts around and learn. After running for a few days, you can join strength training when you are physically strong, otherwise you will be easily injured in sports. I have a friend who came to the gym for the first time and dislocated his shoulder ... There are many tutorials on the strength training network, which you can choose according to your own situation and amount of exercise.