You are waking with the day ~ it is nature's way. Irritating at times but I honestly find I can achieve more if I wake and get up at 5 than if I force myself to stay in bed. This morning I didn't wake but SWWLTBO did so got up and by the time I and the rest of the family surfaced had finished the ironing and was deep into her thesis. As she has no work today she will prolly follow my lead and take a nap this afternoon if she feels tired. We could learn much from those in hotter climes where an early start, a mid-day siesta and a late dinner are considered normal.
I have long felt we are too reliant upon the falseness of the clock whereas nature knows better.