Go to sleep.
then just try and last it out till evening and have an early night.
if you go to sleep in the afternoon and dont get yourself up within a few hours then it completely screws my pattern for a few days.
When they looked at their internal organs, they were mush.
Sleep is important.
This type of experiment is quite common. http://www.bing.com/search?q=%22sleep+deprivation%22+rats+ex...
They use different methods to keep the rats awake. Some say the rats died after 3 weeks, some 40 days... It's pretty much a scientific fact by this point that prolonged sleep deprivation ultimately leads to death.