I've been checking out a lot of the exercises that, as coach John Cook describes them, are ancillary to his athletes' running programs. I was wondering if anyone could explain to me how to time these for optimal recovery/benefit in conjunction with hard/easy days. I know there are benefits from doing general strength exercises like increased testosterone and hgh production, but how does one cycle through all of the variables (hard days, easy days, general strength workouts) and time everything to get the most bang for their buck?