iReport — Boys and girls all ages learning to fight A local boxing gym in Mercedes, TX trains fighters male and female  every day. The trainers are a group of brothers that all started boxing  at a young age and one,  Tomas Barrientes, was the IBA World Champion.  The Barrientes Boxing Gym has become well known in the Rio Grande Valley  for training boxers and helping young people become more disciplined,  stronger and healthy.The pictures are of their training sessions as the boxers sharpen  their skills hitting the bags, shadow boxing, sparring, jumping ropes  and learning from the family of boxing trainers.