Keep a good habit of work and rest, don't stay up late, drink less cold drinks and go to air-conditioned rooms, exercise moderately and eat lightly. You can eat something that can strengthen the spleen and stomach, such as red beans and glutinous rice porridge. If possible, the mode of Chinese medicine will be better. After all, obesity is generally spleen and stomach weakness. If it is more fundamental, it may be qi and blood weakness, so you should see a doctor in your diet and use Chinese medicine if necessary.