As days are getting shorter and the weather is getting colder there's no doubt that fall is knocking at our doors. For some folks this means changes to their workout routines especially for those who like to run, walk or ride outside. It reminded me of an interesting question I was asked by a reporter a few years ago. He noticed that around this time of year, he stopped sweating during his workouts and was worried this meant he was being less effective. How much does sweating define a good workout? Check out my answer in his article.