If you need to lose weight, evening exercise is better than morning exercise, because after dinner, if the appropriate to exercise, including brisk walking, jogging and cycling such exercise, but it should be noted that not immediately after the meal exercise, because just after eating, the stomach is relatively full, if immediately exercise, may cause poor digestion and gastric prolapse, serious can cause gastric torsion. Therefore, generally half an hour to an hour after the meal exercise is more suitable, try not to exercise in the morning, because the morning blood sugar is low, if the exercise, as well as exercise too much, especially for people with diabetes and abnormal glucose tolerance, may cause pre-meal hypoglycemia, hypoglycemia after eating too much, but cause excessive calorie intake.