The best time of day for surgery is definitely in the morning, between 8 and 9 am, when the patient does not have to wait too long and there is no hunger in the abdomen and no insulin resistance. From the surgeon’s point of view, the surgeon is more energetic at this time of day and will not experience fatigue or sleepiness. If the surgery is performed in the afternoon or evening, patients who wait too long in the ward may become mentally anxious and afraid of the surgery, which may lead to fluctuations in hormone levels in the body. Secondly, patients who wait too long may develop insulin resistance, and their blood glucose levels may fluctuate greatly.