See a doctor of traditional Chinese medicine, because losing weight suddenly changes your physical environment and habits of the original body, so your body will make some antagonistic defenses. After burning fat, the original skin will shrink, so the corresponding skin will need to adapt to the specifications of the new body, and your current situation should be that there is something wrong with your lungs, because the lungs are the main fur in traditional Chinese medicine, and it will itch at night, which is a symptom of cold, evil and yin deficiency. I suggest you go to an old Chinese doctor to recuperate and lose weight slowly. Healthy weight loss won't hurt your health. It's summer now, and aerobic exercise can do gentle jogging for 30 minutes. As for other high-intensity sports, it is better to do as little as possible, because summer is very tired, so gradual exercise is scientific. I hope you can be healthy and happy.