[jen_slc]

A) Morning might be better as it "boosts" your metabolism for the day (and possibly longer?); might have more energy first thing in the morning vs. after work. We also might struggle with increased insulin resistance in the morning; combine that with exercise-induced hyperglycemia that some of us experience and blood sugars might be terrible with this type of routine!

B) hmm, I wonder if this makes a difference? I'm very curious. I used to do strength training after cardio so that my muscles were warm; however, now I do more of the opposite (strength training first, then cardio) and I can tell you that I do better in both aspects. Yes, my muscles are tired after weights, but still able to do 30-60 min cardio. I might have a different story if I were running a marathon though.

C) What's the point? Wouldn't you miss out on the fat-burning stage here?

D) I think I would agree on this one. Reminds me of napping techniques: sleep less than 30 min or more than 2 hrs so that you don't interrupt REM sleep, or something like that. Maybe there is something similar with muscles? Give yourself enough recovery/catch-breath time, but not so much so that your muscles forget you are still working! If you're going to break for a while, might as well be a long one because you're going to have to "wake up" your muscles again.