Fastwalkingistheexercisebetweenwalkingandracewalking.As...
问题详情：Fastwalkingistheexercisebetweenwalkingandracewalking.AstudyshowsthatfastwalkinghasbecomethemostpopularexerciseinChinaandmanypeoplewalkmorethan5,000stepsaday.TheresultsofthestudyarefromQQusers....