How long can you go without sleeping?

I have gone about 36 hours without sleeping before, but then I just need to crash for 12 hours or more!! They say sleep deprivation isn't good for you, though.

when i was younger, i could go 3 days and nights without sleep now i can only go about 20 hrs once in a great while. i usually sleep from 6 to 8 hrs a night to feel good.

I daily sleep for 6 hours or so which makes it 16 hours in a dayis enough for me.As I have to work hard so I deserve a sleep at quick intervals to gain some energy again.

I certainly would not deprive myself to find out but the longest I have ever gone without sleep is 48 hours. That was due to a family emergency and it took me a week to get straightend back up! LOL

I think the longest I've ever stayed awake was about 30 hours, but that was a while ago when my body could still handle it. Yesterday I was awake for 25 hours because I wanted to go shopping and take advantage of the after Christmas sale. I knew if I went to sleep, there would be no way I'd wake up early enough so I decided to stay up. It was worth every $1 I spent!

i can go for 20 hours without any problem but at times i have gone upto 40-42 hours without sleeping but will admit that while going to sleep during that must have slept like anything.however its not good to intentionally not sleep.