Not sure about IQ, but I remember when I had to prepare for some exam, in a subject uninteresting to me, I was procrastinating a whole day and only starting to

Not sure about IQ, but I remember when I had to prepare for some exam, in a subject uninteresting to me, I was procrastinating a whole day and only starting to study at 00:00 midnight till 3:00-4:00. For me, it also depends on where I am. In the city - get up late, go to bed late. In the village/farm house - get up 5:00-6:00 morning, go to bed earlier, usually 21:00-22:00.