美国罗格斯大学规划与公共政策学院约翰·普切尔教授历时10年的调查研究显示,尽管美国汽油价格波动很大,人们腰围也不断增长,而且有大量研究显示积极运动对身体有益,但美国人还是不愿意走路和骑自行车。调查显示,过去10年间,走路的美国人略微增加,骑自行车 Professor John P. Pochel, a professor at the School of Planning and Public Policy at the University of Rutgers, has conducted a 10-year survey that shows that although the price of gas in the United States is volatile and people’s waist circumference is constantly growing, and a large number of studies have shown that active exercise is beneficial to the body, Americans still do not want to walk and ride a bike. According to the survey, the number of Americans who walked increased slightly over the past 10 years by bicycling