[1][2] Breivik won three Norwegian national championships and two league titles during her career as a player.

[4][5] Breivik is known for her calm, controlled coaching style, knowledge of the sport and tactical innovations.

[3] During the 1970s and 1980s, she played for Skogn IL, where she won three Norwegian national championships and two league titles.

[3] Breivik made her debut for the Norwegian national team in 1975, after representing Norway at youth and junior level.

She was married to Niels Hertzberg, the former secretary general of the Norwegian Handball Federation, until his death during a holiday in Brazil on 2 March 2013.