Fasting blood sugar impaired fasting blood sugar range is 6.1~7.0mmol/L. Fasting blood sugar 6.2mmol/L is the stage of impaired fasting blood sugar, which needs reasonable diet and proper exercise etc. to prevent the development of diabetes. 1. Reasonable diet: Overeating or eating too much food with high sugar content at one time will easily increase blood sugar. When the fasting blood glucose is 6.2mmol/L, avoid overeating, eat small meals and control the intake of carbohydrates. 2. Appropriate Exercise: Active participation in physical exercise is an important means of lowering blood glucose and preventing the development of diabetes. When there is impaired fasting blood glucose, you can actively participate in physical exercise, such as jogging, swimming and so on. When impaired fasting blood glucose occurs, you can go to the hospital and adjust your lifestyle under the doctor’s guidance, etc.