What has been the least amount of sleep you have had to run on for a day?

Only got about 5 hours of sleep last night and I have to say it doesn’t feel great.

What is the least amount of sleep you have gotten to run on for a day? How did you feel? What did you experience? How were you around other people? Did you have to work, go to class, anything? What did you do to stay awake? Why did you not get a lot of sleep last night?

What is the longest amount of time you have gone without any sleep at all?