How long is the best time to run in the morning, generally depends mainly on what the purpose of exercise is, a normal person needs 150 minutes of exercise time a week, the average daily running in about 20-30 minutes. Often run more than 20 minutes, can improve the state of cardiovascular system health. If you need to jog in order to lose weight this jog requires more than 40 minutes, 20 minutes after the fat can be slowly consumed, you can run about 4-5 times a week. There are many people say that 40 minutes is difficult to adhere to, you can also walk briskly, if some people feel that 40 minutes is easy, then you can do intermittent aerobic exercise, thus playing a certain role in the coordination of exercise.