I think my internal circadian clock that promotes sleep at night is out of whack, I seem to sleep all day long.
I would sleep later, but I have to get up early for work and children to school.
death. For a phenomenon so important, the purposes and mechanisms of sleep are only partially understood, so much so that as recently as the late 1990s it was quipped: "The only known function of sleep is to cure sleepiness". However, the development of improved imaging techniques like EEG, PET and fMRI, along with high computational power have led to an increasingly greater understanding of the mechanisms underlying sleep.
The fundamental questions in the neuroscientific study of sleep are: 
1. What are the correlates of sleep
the office worker who goes to work at night. All three band members then wear pajamas and bed socks, while failing to get to sleep during the day. The video was directed by the Icelandic Snorri brothers. "I think it's about the sort of alien nature of a night shift," explained Mike Mills. "The weird lighting, the fluorescent lights that you find and the isolation of working the graveyard shift—how it screws up your sleep patterns and that sort of thing, and I think that's