There's a rule against lurking?
"36 hour days" triggered a completely off-topic chain of thought. Look into polyphasic sleep cycles. It is borderline crazy, but done with moderation can yield great results. For about a year I slept 4 hours a day and never felt more awake. 1 hour after work, 3 hours before work. Takes some getting used to. You'll be a zombie for a week at least. Then 'something happens' and I was used to it to the extent I did no longer need an alarm clock. Wide awake all day, every day. When it was time to sleep, it was like someone flipped a switch. 20 productive, wide awake hours every day. Not like on my more regular schedule where I tend to be awake 17-18 hours a day and feel sleepy for at least 4 of them.
I would keep doing it if it wasn't for my daily schedule getting shifted around. Mess up just a little for a few days in a row, and the whole system falls apart.
Unless you're a glutton for punishment and possess the discipline of a zen master, skip the fabled 'Uberman sleep schedule'. Theory is that if you deprive yourself of enough sleep, your brain adapts to dropping straight into REM sleep. Uberman schedule is roughly 20 minutes sleep every 4 hours. People who stick to this schedule tend to sleep for 20-plus hours once every few months.