Early morning exercise is good on an empty stomach or after meals need to be judged according to personal circumstances, fasting exercise is not suitable for easy hypoglycemic episodes, older people, after meals exercise needs to be about half an hour after meals and then start; other people can choose according to their own circumstances, the difference is not great. For people who are prone to hypoglycemic episodes, older people, etc., with weaker blood glucose regulation, fasting exercise may induce hypoglycemic reaction, followed by weakness, hunger, pallor, cold sweat and other discomforts, so it is recommended that exercise be started after a meal and half an hour or so after the meal. Other people can choose according to their own situation. People who need to exercise are recommended to adopt a scientific and reasonable way of exercise.