Everybody does overdistance and has been doing it pretty much forever. Most just don’t do crap like 800’s at the start of training anymore. Those slow ass jog 400’s that Asafa does at the start of every season has no bearing on his 100’s. No secrets there.
Even Donovan Bailey, who says he only ran 150 and less in training did a few 200’s. And Pfaff will include longer tempo and Int tempo runs at the beginning of the year…sames as everybody else.