You should get up half an hour earlier than usual. First, when you open your eyes, you should start doing sit-ups in bed to exercise your abdominal muscles. Then you should go downstairs for a run. Absorbing the cleanest air in the morning is good for your health, and running will exercise your whole body muscles. Very good! Go on like this. I believe that after half a month, your body will get better, come on!

Hang in there. And the amount of exercise should be increased slowly every day, so don't rush for success.