It would be remiss to have a Mandarin lesson on training for the Olympic Games without a Chinese learning analogy to go with. So... Ken is your coach. Jenny, your cheerleader. The daily podcast is your pep talk. The expansion sentences are your cross-training and the exercises are, well, your exercises. Please don't eat too much while listening and whatever happens, don't injure yourself. And, if you get burned out, think of Jenny with her pompoms, and all will be right in the world once again.