Your Average Heart Rate Is Hiding the Real Problem

In this Faster Beyond 50 Run Roast, Lindsey Parry and Devlin Eyden uncover the clues hiding in one runner's pace and heart-rate data - and the temptation that can turn an easy run into the wrong session at the wrong time. Why can "feeling good" catch you out?  When does finishing strong become a mistake?  And what would the coaches change before race day?