At the Ring Boxing Club, boxers range in age, are both men and women, and include an award-winning author.
For the fourth time in 45 years, the question of statehood is on the ballot in this American territory.
It’s never been approved but analysts say this time could be different because of tough economic conditions in Puerto Rico.
Some Puerto Ricans say the island can’t afford to remain a U.S. territory or become independent. The BBC’s Nick Davis reports from San Juan.