Gymnasts play in a fountain to cool down in hot weather, on the second day of the World Gymnaestrada in Lausanne July 11, 2011. More than 20,000 participants from all over the world will attend group gymnastic performances over seven days at the non-competitive event taking place every four years. REUTERS/Valentin Flauraud (SWITZERLAND - Tags: SPORT GYMNASTICS ENVIRONMENT IMAGES OF THE DAY)

- Image ID: 2CNRCXB

Gymnasts play in a fountain to cool down in hot weather, on the second day of the World Gymnaestrada in Lausanne July 11, 2011. More than 20,000 participants from all over the world will attend group gymnastic performances over seven days at the non-competitive event taking place every four years. REUTERS/Valentin Flauraud (SWITZERLAND - Tags: SPORT GYMNASTICS ENVIRONMENT IMAGES OF THE DAY)

REUTERS / Alamy Stock Photo

Image ID: 2CNRCXB