I read a lot of reviews and I can not believe so many people called this challenging and even mentioned it was so hard you should do it once a week! This is definetely a beginners workout, I've been training with taebo for about 10 years, I also studied Karate-Do for years and our warming up (before actually starting the class) was much much harder than this.
A beginners workout DEFINETELY NOT FOR ADVANCE LEVEL!