Paul has been living with HIV for 27 years without ever needing to take treatment. He never thought much of it until the day a friend said to him, "You haven't been sick. ... Why do you think that you're doing so well?" Paul soon discovered he was one of the lucky few positive folks known as "long-term nonprogressors" -- people who have HIV, but whose CD4 count stays high and viral load stays low for a long time without the help of medications. In this interview with TheBody.com -- the latest in our This Positive Life podcast series (available as both audio and a transcript) -- Paul discusses his life, and explains how he's happily become a guinea pig for HIV researchers hoping to figure out what makes him tick.