It's 4am in the morning here in the UK and I have decided to pull an all-nighter to get some work completed. It wouldn't be the first time!

This got me thinking; what is the longest you have gone without sleep? For me, I foolishly drank 6/7 cans of red bull in one night once and was awake for 5 days unable to sleep. I'd lay down, close my eyes and my head would be spinning.

1st day was not a problem, 2nd day was horrible, 3rd day I seemed to adjust but went a bit numb / spaced out, 4th day I felt ill, anxious, panicky and jumpy, 5th day I felt all of the above, plus I couldn't string a sentence together and started to have hallucinations.

Just a side note: missing any sleep is not advisable and I didn't do this intentionally. Sleep deprivation can seriously affect your mental and physical health.

So, what is the longest you have gone without sleep and, what did you experience?