Hey @angelazeera
Productivity seems to be more and more important in our current world. It's actually crazy that we are getting more stressed out during these days with all the helpful tool (like e.g. a washing machine) ... Back in the days people didn't have all this modern things and needed way longer (e.g. for washing cloth).
I am really curious about polyphasic sleep which adds some more hours to the day. Have heard about it?