Kit kats 400m program

I don’t want to hijack the thread, but I would like to get some input form the kitkat followers on CF.com concerning the following training session which is very closely linked to the sessions being described in this thread. Question…what is your realisitic opinion on anyone being able to perform the following session, or anything close to it:

6 x 250 @ 90% off of 90secs rest

Considering the difficulty many express with kitkat type sessions of 6 x 200 at come home (which with anyone I have worked with is something less than a 90% pace), this just doesn’t seem like a session many, if any, athletes can work through. The extra 50m, plus the increase in pace, even if it is just the difference between 87-88% and 90%, seems excessive. Anyone with experience with these type of sessions have an opinion? And I would love to here kitkat’s view on this.

Thanks,…