Kim Kardashian's Wedding Workout Made Better

So I just saw a video online of Kim Kardashian's trainer giving some tips for her wedding workout.  Now the last thing I want to do is talk smack about him as he obviously does something right since he trains so many celebs. So KUDOS to him. What bothered me a bit was that he was saying that people should do cardio and strength training at the same time.   Here is why I don't think this is effective, and not even for Kim Kardashian's wedding workout.