Do not exercise after drinking sugar water for the glucose tolerance test, it is best to remain at rest, otherwise the results will be affected and the judgment of the results will be affected. The glucose tolerance test is the gold standard for diagnosing diabetes and requires five intravenous blood glucose tests, including fasting blood glucose, blood glucose 0.5 hours, 1 hour, 2 hours and 3 hours after drinking sugar, during which time you can walk appropriately, but you must not exercise deliberately and avoid straining. After drinking sugar water, blood sugar must rise. If it is normal, the indicators of each point will be in the normal range, and fasting blood sugar is between 6.1-7.0mmol/L. In this case, it is impaired fasting blood sugar regulation. If the blood sugar is between 7.8-11.1mmol/L 2 hours after taking sugar, this condition is called abnormal glucose tolerance, and both conditions are prediabetes. If fasting blood glucose is >7mmol/L and 2 hours after taking glucose is >11.1mmol/L, any point of both reaching the standard is a clear diagnosis of diabetes.