Originally Posted by Sands

When I have a nocturnal sleep schedule I sleep for six hours and wake up feeling like a champ. I'm more focused and energetic as well. When I have a regular sleep schedule, I need 8 to 9 hours and I always feel like I'm at full capacity.

I've found that the best way to switch back to a normal sleep schedule is go without sleep until I'm dead tired at around 9 or 10 pm. Eat lightly during the day and eat a big meal before you sleep. That should do the trick.