Olympians are renown for their intense dedication to their bodies. Years of training and dieting can result in some extreme frames--like Michael Phelps' 6-foot-7 wingspan and Lolo Jones' chiseled arms.

This weekend New Zealand cyclist Greg Henderson showed the world some of his rivals' unique physical features during a "quad-off" between two German cyclists.

Henderson tweeted a photo of Andre Greipel and Robert Forstemann with their trousers down and their quads exposed. Greipel (left) has some wide thighs, but Forstemann's tree-trunk quads (right) make Greipel's legs look like pencils.

"You thought Greipel has a big set of legs," Henderson tweeted. "There was a quad off in the German camp today. Greipel lost"

Now you can see why Forstemann truly deserves the nickname "Mr. Thigh."

-- Follow Robbie Levin on Twitter @RobbieLevin.

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