Exercise on the first night will generally not affect fasting blood glucose the next day, but normal diet and sleep should be ensured. Exercise on the first night will generally not affect the next day’s fasting blood glucose results. Moderate exercise is good for the body, and blood glucose testing immediately after exercise should be avoided. Avoid eating after 22:00 p.m. and get a normal night’s sleep before the fasting glucose test. Staying up late may increase glucagon and affect the next day’s glucose results. If the patient is taking some medications (e.g. metoprolol, hydrochlorothiazide, etc.), or if there is stress or infection, it can affect the blood glucose results. Testing blood glucose should be done under the supervision of a doctor.