Think resistance bands are an invention of the aughts? This 1930s fitness model and creepy mannequin beg to differ!

Employing what appears to be a simple spring, this proto-band could help a Jazz Age girl on the go with core, leg, arm and back exercises. We’re not totally sure what the purpose of those heels are.

While this particular move may be, ah, lost to history, here are 33 ways to put our contemporary, latex era bands to good use.

A woman uses a piece of exercise equipment made from a spring, 1935. (Photo by FPG/Hulton Archive/Getty Images)