I've tried BFL and it's a great plan but I do love my cardio exercise. He is more into weightlifting than cardio. I still did my hour cardio but I didn't finish through the entire plan. I personally couldn't deal with the day off. I was so thrown by eating whatever I wanted that it would take a couple of days to get back on track, so I stopped. I don't have the will power to eat what I want and then back on track the very next day. So I decided it wasn't for me.
I see 4 girls at the gym who are doing the BFL. I don't see a difference in any of them but only 1 is heavy and the others are very thin so I believe they are trying to build muscles. I believe you need the entire package, vitamins and all for this plan.
Just my 2 cents worth!
I can do all things through Christ Jesus who gives me strength!