Quote from Gabfly1:
I had bought two of Darden's books at around the same period. I no longer have them. What I vaguely recall is that Darden proposed three 45-minute workouts per week. I don't think it was a split routine, but I don't remember. What I do recall is that he proposed very short breaks between sets, perhaps less than one minute, for even the larger muscle groups. I could never work that into my routine because, if I went all out on a set to failure, I would not be ready for the next set within the prescribed period. And if my breathing is not fully back to normal, then the weak link will not be the muscle I'm working, but rather my cardiovascular system. Personally, I prefer my anaerobic exercises to remain anaerobic. Also, although I no longer remember the number of sets per muscle group he proposed in those earlier books, they struck me as a little on the low side at the time. However, I just don't remember.