I took a lunch break after 3 blocks, and reviewed murmurs during it, since up to that point, I hadn't had my heart sound questions yet. Had both heart sounds right after lunch, with the murmur info fresh in my mind. I thought that this worked out nicely. Other than studying something that you easily confuse/forget, I wouldn't recommend this. Like the other posters mentioned, DEFINITELY stay away from the areas you've been tested on. DO NOT LOOK UP YOUR ANSWERS.