unbelievable-facts:Before alarm clocks were invented, there…

unbelievable-facts:

Before alarm clocks were invented, there was a profession called a knocker-up, which involved going from client to client and tapping on their windows (or banging on their doors) with long sticks until they were awake. It lasted into the 1920s.

Source:

AMAZING FACTS

Unbelievable Facts

Leave a Reply

Your email address will not be published. Required fields are marked *