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Michael Phelps, born in 1985, is an American former competitive swimmer and the most successful Olympian of all time, with a total of 28 medals. He is best known for his exceptional performances at the Olympic Games, where he won 23 gold, 3 silver, and 2 bronze medals, breaking numerous world records along the way. Phelps retired from competitive swimming after the 2016 Olympic Games in Rio de Janeiro.