"Phelps has a body particularly suited to swimming. He has a long, thin torso with arms which span 6 feet 7 inches (200 cm), disproportionate with his height of 6 feet 4 inches (190 cm).[11] However, he has relatively short legs which reduce resistance through the water,[12] but despite this he has size 14 feet (49.5 Europe) and double-jointed ankles. He can extend his ankle beyond the point of a ballet dancer which enables him to whip his feet for maximum thrust.[13]"
- http://en.wikipedia.org/wiki/Michael_Phelps
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