1981: Olivia Newton-John, Getting Physical
Olivia Newton-John is an Australian (although English-born) actress, singer, songwriter, and dancer that is best known for her leading role as Sandy in “Grease,” the musical that took the world by storm all the way back in 1971 – and it’s still regarded as a classic movie today.
Source: Flickr
Although Olivia Newton-John isn’t exactly a celebrity fitness guru like some of the others on this list, her smash-hit single by the name of “Physical” was pretty much a fitness video – and it was a global sensation that motivated people to get up, get moving, and – you guessed it – get physical.