I only ask because my internal body clock woke me up about 20 minutes EARLIER this morning because (I think) it knew I hadn't set the alarm clock for 5.45am as usual and was making sure I got up "on time". So 5.20am this morning. Cheers for that.
I do usually get up at around the same time even at weekends and during holidays though. The idea of a lie-in doesn't appeal at all - I'd rather have a catnap later in the afternoon if I'm feeling really tired, or go to bed earlier.
So are you more the type to sleep longer when you don't need to get up for work/school/etc or rather get up the same time every day regardless of what you're doing?