I like exercising, too. I used to have sex at the gym. In your situation, you can't rush to exercise slowly from childhood to adulthood.

Start jogging every day, don't run for half an hour, then shake your neck and expand your chest to move your whole body from head to toe 15 minutes. When your muscles and bones are active, you can do some strength exercises. I believe you can run faster in a week. Add some exercise every week for a month, and your physical fitness will be greatly enhanced. Now that you can adapt to those high-intensity equipment, exercise your muscles in all parts according to the guidance of the fitness instructor.

You must keep running every day. At first, your muscles will ache, which is a good sign of your progress. If you don't feel pain, it's too little exercise. Eating more bananas can speed up the excretion of lactic acid and relieve pain.