But how do you do this? You wake up and go to sleep again and again? I wake up naturally after 7 or 8 hours, would be kinda hard for me to sleep 11.5 hours.
I find that I'll often come up to a point of half-consciousness at about 8/9.5/11 hours, but as long as I don't sit up or get out of bed or start checking my e-mail on my phone, it's pretty easy to fall back asleep.
Whether I want to depends on how much mental activity I've been doing; I'm far more likely to think "That was a nice dream, I don't wanna get out of bed yet" if I've got a thorny challenging problem in my head than if I'm like "Gotta get into work and start coding."
I think it also depends how much light you have in the room. I think you would find it easier to sleep longer if the room was still dark after 8 hours.
