The contestants' food and fitness knowledge is put to the test this week when Good Housekeeping Magazine's editor in chief stops by for a trivia challenge that will give the lucky winner an all-expense paid trip to New York. Then contestants face a different kind of test when trainers Bob Harper and Jillian Michaels send them grocery shopping on a budget - and then critique their purchases. Later, a unique challenge tests each player's balancing skill, and one contestant hits a big milestone at the weigh-in before a shocking elimination sends another player home.