November 8, 2015, 11:40 AM|A new study by the London School of Economics says that when it comes to losing weight, the best exercise is a brisk walk. Charles Osgood reports.
November 8, 2015, 11:40 AM|A new study by the London School of Economics says that when it comes to losing weight, the best exercise is a brisk walk. Charles Osgood reports.