Children exercise before a wrestling practice session at an old Basque ball game gymnasium in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Children make a line during a wrestling training session in front of pictures of late Cuban revolutionary hero Ernesto “Che” Guevara (L), former Cuban President Fidel Castro (C) and Venezuela's late President Hugo Chavez, on the outskirts of Havana, November 1, 2014. (Photo by Alexandre Meneghini/Reuters)

Jonatan Leliebre, 10 (L), and Oscar Torres, 9, exercise before a wrestling practice session at an old Basque ball gymnasium in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Children exercise before a wrestling practice session at an old Basque ball game gymnasium in downtown Havana, November 13, 2014. (Photo by Alexandre Meneghini/Reuters)

A man helps a child exercise before a wrestling practice session at an old Basque ball gymnasium in downtown Havana, October 20, 2014. (Photo by Alexandre Meneghini/Reuters)

Children exercise during a wrestling lesson in downtown Havana, October 20, 2014. (Photo by Alexandre Meneghini/Reuters)

Children receive instructions from their wrestling teacher during a lesson in downtown Havana, October 20, 2014. (Photo by Alexandre Meneghini/Reuters)

Children exercise during a wrestling lesson in downtown Havana, October 20, 2014. (Photo by Alexandre Meneghini/Reuters)

A child exercises with a rope during a wrestling lesson in downtown Havana, October 20, 2014. (Photo by Alexandre Meneghini/Reuters)

A wrestler takes a break at an old Basque ball gymnasium in downtown Havana, October 20, 2014. (Photo by Alexandre Meneghini/Reuters)

A bust of Cuban independence hero Jose Marti at a wrestling academy in downtown Havana, November 15, 2014. (Photo by Alexandre Meneghini/Reuters)

Children exercise during a wrestling lesson at an old Basque ball gymnasium in downtown Havana, October 23, 2014. (Photo by Alexandre Meneghini/Reuters)

Children practice during a wrestling lesson in downtown Havana, October 23, 2014. Picture taken October 23, 2014. (Photo by Alexandre Meneghini/Reuters)

Children practice during a wrestling lesson in downtown Havana, October 23, 2014. Picture taken October 23, 2014. (Photo by Alexandre Meneghini/Reuters)

A child uses an iron door to exercise during a wrestling lesson in downtown Havana, October 29, 2014. (Photo by Alexandre Meneghini/Reuters)

A wrestling teacher gives instructions to a child during a lesson in downtown Havana, November 11, 2014. (Photo by Alexandre Meneghini/Reuters)

Children practice wrestling in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Wrestling teacher Esteban Quintana, 43, smokes a cigar during a training session in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Oscar Torres, 9, (C) leads an exercise during a wrestling lesson in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Children exercises before a wrestling lesson on the outskirts of Havana, November 1, 2014. (Photo by Alexandre Meneghini/Reuters)

A child lifts weights during a wrestling lesson in downtown Havana, November 13, 2014. (Photo by Alexandre Meneghini/Reuters)

Children practice during a wrestling lesson in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Children fight during a local wrestling tournament in Havana, November 15, 2014. (Photo by Alexandre Meneghini/Reuters)

Children react during a local wrestling tournament in Havana, November 15, 2014. (Photo by Alexandre Meneghini/Reuters)

A child speaks to his coaches during a local wrestling tournament in Havana, November 15, 2014. (Photo by Alexandre Meneghini/Reuters)

A child cries next to his coaches after losing a fight at a local wrestling tournament in Havana, November 1, 2014. (Photo by Alexandre Meneghini/Reuters)