The Ups and Downs yo-yos

According to the book yo-yos have been used many years ago, but in that time -500 years B.C- yo-yos were a plaything for grown ups people, they used it because yo-yos were in fashion or to calme the anxiety.

As I remember when I was a child yo-yos were used by children,contrary to the 1950s and 1960s,but now either children nor adults play yo-yos, children prefer video games and adults are so busy to play.