These Two Incrediable Women can Juggle Tables With Their Feet [VIDEO]

This act was around in the 1960's and was featured in this footage from the Ed Sullivan Show, they were the Baronton Sisters from France and could juggle full size tables with their legs and feet.

I can't remember ever seeing an act like this before, maybe that is why it caught my attention. Have you ever seen an act like this before? How do you start doing something amazing like this? Who says to their sister, "hey sis, do you want to juggle the dinner table with our feet?"