They walked around the field. The sound of bones breaking and fists slamming against the leathered pads was all that was heard, you wouldn't believe you were in the middle of a neighborhood.

Everyone was divided into groups of four, paired up with a partner and three trainers who kept everyone in check and made sure they knew what to practice.

Some were on the grass, others on the concrete and it didn't matter what lay beneath you- they still threw each other up in the air and ...