Jane Fonda on the Origins of her Famed Workout

In 1982, Jane Fonda released her very first home fitness tape that she would later transform into an exercise empire.

While Jane's sudden rise to fame as an aerobics celebrity might fit oddly into the Academy Award winning actress' timeline, the now 75-year-old star perfectly details the moment she was called to the craze on NatGeo's The '80s: The Decade That Made Us.

Related: Hollywood's Most Powerful Women Honor Jane Fonda

Click the video above for an exclusive sneak peek!

The '80s: The Decade That Made Us airs Sunday April 14th at 8:00 pm on the National Geographic Channel.