10 4 x 100 medley relay - 3:29.34 11 Physique:  A few physical attributes particularly suit Phelps to swimming: his long, thin torso offers low  drag ; his arms span 6 feet 7 inches (201 cm)—disproportionate to his height of 6 feet 4 inches (193 cm)—and act as long, propulsive "paddles"; his relatively short legs