Well, like so many things - it's different than when I was younger. After that long night of sew, sew, sewing - I think I went to bed between 3 and 4:00 AM - the next night I was in bed by 9:00. Used to I could do 3 -4 nights in a row - now two is pushing it!
A dear friend and I are going on a quilt retreat later in June and plan to stay up until 2:00 sewing and then sleep until 10! We'll see if that works. I can see the 2 AM happening, but 8:30 is about the latest I can sleep in these days.