A picture shows the Olympic tattoo of Spain’s gymnast Sergio Munoz

A picture shows the Olympic tattoo of Spain's gymnast Sergio Munoz as he competes on the rings during the men's qualification of the artistic gymnastics event of the London Olympic Games on July 28, 2012 at the 02 North Greenwich Arena in London. (Thomas Coex/AFP/Getty Images)

A picture shows the Olympic tattoo of Spain’s gymnast Sergio Munoz as he competes on the rings during the men’s qualification of the artistic gymnastics event of the London Olympic Games on July 28, 2012 at the 02 North Greenwich Arena in London. (Thomas Coex/AFP/Getty Images)