Personally, I think it is almost impossible to know how much I lost in a week. For example, I have seen someone lose from 1 kg to 6 kg in a week. It depends on the calories burned and the extra exercise. And even two people with the same calorie intake and the same amount of exercise will affect their final weight because of their different constitutions. Besides, what you need to pay attention to is that your treadmill running for half an hour every day will increase your muscle content more or less, and muscle will be heavier than fat next year. So what you are doing now is just the plastic surgery stage of reducing fat, including how much weight you can't predict in a week. It is suggested that you can quickly increase resistance and reduce fat for half an hour by elliptical machine outside the treadmill, which will basically have a good effect on shaping. I hope it helps you.