Matthias Schlitte has a normal-sized left arm, but his right arm—which is 46 centimeters around his forearm—is something out of the ordinary. When he was 16 years old, he found out that his ...

While his left arm is normal size, Schlitte’s right is Popeye-like due to a rare genetic defect that makes his right forearm bone 33 per cent larger than his left. Schlitte first hit the arm ...