I read somewhere a little while ago that people sleep more while on holiday.
Then why is it that I was up bright and ready to face the day before 06:30 while cycling last week, but was hardly awake at all this morning as work recommences?
Perhaps it's that we're now at the stage where the sun rises over the house opposite sometime after 06:30, so as I drink my morning coffee, I watch the shadow move across the bedroom curtains. Dark mornings soon. Ugh!