I like how you alternated the workouts. Were you doing cardio on days inbetween?
I know this is going to be unconventional, and there are some that feel lifting every day is counter-productive. So I need to state that upfront, this is only how I do it.
I love Cathe's full body workouts, I use them as an aerobic- style weight training tool. In my case, I have a full gym in the basement all courtesy of a fanatic husband (who has also now fallen in love with STS) and we've been doing this for years. So lifting heavy for me is squats 265, bench press 120, one-armed rows 50, pulldowns 130, and so on. When I do STS, I follow it closely and I take adequate rest days. In comparison with the full body workouts, I go
really light on weights, nothing heavier then 40 pounds. So I can do these every day...and that's what I did. Going back over my Polar, this is what it looked like:
Monday - rest
Tuesday - STS Total Body
Wednesday - Lower Body Blast
Thursday - High Reps
Friday- STS Total Body
Saturday - Lower Body Blast
Sunday - High Reps
I did these workouts in the morning because in the afternoon I usually was either xc skiing or something to do on the trainer later that night. Cardio was definitely in there but not cardio in the form of a scheduled workout, just fun stuff and not every day either. Looking at the dates, I followed this for 5 weeks too. That's where the most weight loss happened. Currently I've changed back to heavy lifting for one month, so I alternate days carefully again.
Again, I know this goes against a lot of the stuff I read on this forum. I don't mesh well with rules such as doing too much HIIT in a week or back to back light lifting. I think the most important thing though, is to listen to what your body is telling you. If you are suddenly run-down, tired and achy, then you need to rest and acclimate. Plus I can't say too much about getting in that 7 hours of sleep every night. Hope this helps.