Maybe, that is a possibility but i have been on an intensive tempo program since December of 2008 and i didnt improve in my opinion. But i think that could be due to the overwhelming amount of it. But now looking back since i got sick of doing nearly the same thing everyday so i am considering putting in “controlled speed” into my SPP plan to add some variety. I am going to plan it out soon, do you have any suggestions? i want to do S-L and have a 12 week SPP to prepare mainly for 55m and secondly for the 4x200m relay.