One of the best ways to preserve your memory is to know how memory works. What impacts your memory? What triggers your memory? Is it lack of attention, or lack of memory?Find out how much you know about how memory works by taking WebMD’s memory quiz. Not only will you learn some important tips to preserve your memory (take your blood pressure medicine, stay hydrated), but you’ll also learn when to get worried about a memory problem, and when not to. For the test, visit WebMd.