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Agreed. Most people take care of their "sleep debt" on the weekends. That's partly why they are called weekends after all.

Care to explain? What does the word "weekend" have to do with sleep debt?

There is no need to wake up early, I think it's simple as that.

On a working day you might have to wake up earlier than you would naturally do.

What does that have to do with the word weekend? My question was about "That's partly why they are called weekends after all."