If you want to lose weight on the treadmill, it is best to jog. This kind of exercise consumes a lot of calories, at least 30 minutes, but within an hour. You can slow down if you can run for five minutes at most. In fact, aerobic exercise is not about how fast you run, but about whether your heart rate reaches the aerobic level of your own conditions. If you want to lose weight, use this formula to calculate your heart rate (200- age) x(60%~70%). Simply put, you can easily chat with the people next to you when you are running. At first, you may have to walk fast to reach 30 minutes of training, but if you exercise every day, you can slowly improve your speed. I wish you success!