Paying attention to time is more important than paying attention to distance. No matter how fast or slow the exercise is, it usually takes more than 20 minutes to be effective. As long as you use your whole body muscles more than usual, it is useful to swing more! There is also light exercise to lose weight, and the obvious effect will come out in about 2 weeks, plus diet control should be more effective. Don't eat snacks, or advance dinner to 5: 30 to 6: 00, and then don't eat until you go to bed. It won't hurt your health and you can lose weight. After a long time, you will naturally eat less and you will not be hungry. I hope this helps.