Iconic fitness fashion came into play in the 1980s, with day-glo coloured leotards and big hair seen just as much on the streets as it did in fitness studios. Jane Fonda dominated television screens and workouts focused on cardiovascular strength with high-energy movements and high kicks.

Tae Bo, a combined taekwondo and boxing exercise, caught the attention of the nation in the 1990s, thanks to American taekwondo instructor Billy Blanks. His mission was to promote fitness in every area of the body.

In the 2000s, urban street dance moved from school playgrounds and local neighbourhoods, into gyms and fitness studios.

Of course, the pace of fitness hasn't changed today with an overwhelming number of fitness routines available to us, whether it's the T-20 routine on the internet or spinning in the gym. It's both educational and inspiring to see how far women's fitness has come.

Watch some of the most era-defining workouts from the last 100 years below.

100 years of fitness fads captured in 100 seconds