One of the great pastimes of geekdom is adding some degree of factual feasibility to works of fantasy in all its forms. With the release of The Hobbit this Friday, audiences everywhere will be reunited with a much younger, more energetic Gollum than the one they've come to know in The Lord of the Rings trilogy. But a haunting question that fans have tried to wrap their heads around for years is how has Gollum managed to be so long lived in spite of the fact he dwelled within the perpetual darkness of the Misty Mountains, dining purely on fish. Using assumptions on Hobbit physiology and his working knowledge of Gollum's subterranean home, Rhett Allain -- an associate professor of physics at the Southeastern Louisiana University -- has crunched the numbers and deduced how many fish the little guy needs to eat to function. The number may shock you -- if you actually care about this sort of thing, of course.