Mia Rosales-St. John was born in San Francisco, California, on June 24, 1967. Her fighting career started soon after, at the age of six, competing in Tae Kwon Do. Growing up she set for herself the goal of graduating from college (she put herself through school by modeling for posters and calendars). During those years, Mia also managed to earn a black belt, a record of 27-1 and received a Bachelors Degree in Psychology from California State University of Northridge in June of '94.

In 1996, Mia decided to pursue her true passion full-time, the sport of combat. Valentines Day, 1997, Mia made her pro-debut in boxing, knocking out her opponent in fifty-four seconds into the first round. She has continued to live up to her billing "THE KNOCKOUT" ever since.

Mia signed with Don King and stayed with him for a year and a half before she dropped King for his rival Bob Arum of Top Rank. At Top Rank, Mia spent four years opening for all of Oscar De La Hoya's major fights.

In the November 1999 issue of Playboy magazine, Mia appeared on the cover along with an eleven page celebrity pictorial. Mia insisted the pictures maintain a boxing theme so that the world would know she is a fighter first and foremost because as Mia's mother once told her "Fighters are not made, they are born and my daughter was born a fighter."

On October 2001, Mia St. John fought to become a free agent so she could pursue one of her dreams - to fight Christy Martin. December 2002, Mia got her wish and went 10 amazing rounds with Martin.

As well as being a hard-hitting boxer, Mia is media savvy. She has made appearances on such shows as, Jay Leno, Conan O'brien, "Good Morning America," "Entertainment Tonight," "Extra," "The Best Damn Sports Show," "E," and countless others. She has also acted in commercials and played herself on the t. v. show "Pacific Blue." Mia also has her own Playstation game by EA sports.

Currently her own exercise DVD "Million Dollar Workout" is in stores now nationwide in both English and Spanish. She is also working on a new career in hosting for networks such as, Fox Sports Net, ESPN and color commentating many of the Pay Per View fights. Mia is also an author, in November of this year her fitness book, "The Knock-Out Body Plan" will be in stores.