Coach Jack Daniels: Interval Workouts June 2, 2011 By Run S.M.A.R.T. In Ask Dr. Jack Daniels / Jack shares his thoughts on how far and fast you should be running your interval workouts. Coach Jack Daniels is a private coach for The Run SMART Project. To receive a handwritten schedule from Jack check out the Run SMART Training Plans. Tags:Dr. Jack Danielsinterval training Jack Talks About Run SMART On Flotrack Coach Jack Daniels: Proper Running Form Comments are closed.