Did you ever do / consider using running A’s for the back up on split runs? Example week 11 of S-L instead of 200+200 doing 200 @ above race pace then 25 seconds running A’s?
Would this have merit? 
Did you ever do / consider using running A’s for the back up on split runs? Example week 11 of S-L instead of 200+200 doing 200 @ above race pace then 25 seconds running A’s?
Would this have merit?