Sleep is very important. Adequate sleep contributes to the body's metabolism and does not cause edema and endocrine disorders.
Finally, it is recommended to exercise regularly for more than 30 minutes every week before starting to burn fat. The best content is the combination of machinery and oxygen. As long as you stick to your body shape, you can keep it.
Never take extreme measures, such as excessive exercise and not eating staple food. It's unhealthy and unsightly. I hope you can arrange it reasonably and wish you satisfaction.