The recent passing of Hulk Hogan has forced his greatest rival, "The Nature Boy" Ric Flair, to confront his own mortality. In a candid and emotional new interview, the WWE Hall of Famer admitted to having growing fears that his own time could be running out.

The passing of Hulk Hogan this past week shook the pro-wrestling world to its core — and Hogan's longtime friend Ric Flair, in particular.

John Cena, Ric Flair and more stars paid tribute to the late wrestling legend Hulk Hogan after his death at age 71 on July 24. Ric Flair spoke with PEOPLE.