Diabetic patients exercise time considerations are as follows: 1, it is recommended that 1-2 hours after the meal exercise, because the gastrointestinal tract of food in 1-2 hours to digest most of the blood sugar will be controlled at a relatively stable level; 2, do not exercise when insulin and oral medication to enhance the drug, at this time exercise may occur extreme hypoglycemic reaction; 3, the elderly or some patients like to take medication in the morning after waking up, and then go out to exercise on an empty stomach, which will increase the chances of hypoglycemic reaction.