It is effective for 6 2~3 months. If you walk for 30 minutes to 1 hour every day, you can see the effect of losing weight in 2~3 months, and according to the research of Harvard University, walking for 30 minutes every day can also achieve the effect of prolonging life. As the saying goes, "Take a walk after dinner, and live to ninety-nine", and it is a healthy lifestyle to insist on taking a walk.