several times I have gone around 72 hours without sleep. Even with complete exhaustion my mind still wont shut off for me to go to sleep. I have had difficulty sleeping for over 7 years. It first started with staying up later and later each night until I am up for 24 hours before I realize it.
Just shy of 3 days for me. I went months with only sleeping 2 to 4 hours as well. I couldn’t fall asleep and when I did, I couldn’t stay asleep. I have since corrected this by balancing out my system naturally. I had sleep issues from 15 to 25.
Since, 3 years I am suffering from Insomnia. Not getting sleep at night or otherwise if I felt asleep at 10 o’clock then I used to wake up at 2’oclock. The longest hours that I did not gert sleep is 35 hours.