The second edition of our Ask Dr. Jack Daniels series focuses on running economy. Today we’re posting Jack’s response to a question submitted by Greg Rosetti: “Who is the most efficient runner you’ve ever tested?”
In order to participate and get a chance to see Jack answer your question, just include #AskDrJackDaniels with your question in a Twitter update or become a fan of our Facebook page and write your question on our wall.
Tags: Dr. Jack Daniels
