1 of 19
Ever since Oprah grabbed four Harpo staffers for her 12-week weight loss boot camp, two things have happened. The four have turned into lean, mean fat-fighting machines, and the thousands of you who joined the Boot Camp have bombarded us with e-mails about the program.

Oprah replies to a batch of the most pressing and frequently asked questions, and Bob Greene weighs in on a few, too!