U.S. women's gymnastics team – It's hard to ignore the muscles sported by the U.S. women's Olympic gymnastics team. All-around gold medalists, from left, Jordyn Wieber, Kyla Ross, McKayla Maroney, Aly Raisman and Gabrielle Douglas show it takes dedication and strength to fly high.
Serena and Venus Williams – If you haven't heard of Serena, right, and Venus Williams, you've been living under a rock with earmuffs on. The tennis stars took home their third Olympic gold medal for doubles in 2012. Serena is currently the Wimbledon, U.S. Open and Olympic singles champion.