Go without sleep??

when it comes to the point where i have to read to pass through my exams, then i feel sleepy but when i am free, i can wake as much as 24 at the least as i avnt tried to wake more, but it is true that when i am reading an xciting novel or playing a good gam or surfing the net..... i can wake for like i dont know, may b for 30 hrs as mom wont let me wak more

I think i can stay awake for 24 hours.But it is Scientifically proven that a healthy can stay for 72 hours without a sleep..

I cant go without sleep anymore. I used to be able to stay awake all day, then all night , then all day again. but now I get way to tired and moody. So I end up having to sleep.