Already a topic like this one here: general-discussions-f41/how-long-can-you-last-without-sleep-t37456.html :yup: ...but to answer to the topic the longest I have ever gone without sleep was a little less then 24 hours.
If I sleep too long I end up feeling guilty and slovenly, or someone comes in and yells at me. I could probably sleep for days, given the opportunity.