The workouts do not use heavy weights, it's lighter weights with more reps and its not an intense strength workout. I see no issue doing it 5 days a week if you wanted to. I sometimes do light weight workouts on days between my strength training more for cardio and endurance.
It's worth a try, but if your muscles start to feel overly fatigued, I'd back off. I think some people can tolerate more frequent muscle work than others.
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"The two most powerful warriors are patience and time." Leo Tolstoy