I agree with the others – the biggest problem with long hours is death by driving whilst tired. I have come close to falling asleep at the wheel a few times. All the spicy mints, air conditioning, open windows and AC/DC blasting in the world may work for a few minutes of driving, but if your body needs to sleep, it will not ask for permission.
I have done a few 18, 24, 36, even a 40 hour editing marathon – you reach a limit of concentration.
The best was I was reviewing a video with a client in Chicago. He was not happy, but the video was being shown the next day at 11am. At 7pm he calls and asks if I can re-edit the thing. I told him I did not have the raw footage with me. So I took a taxi to O’Hare, somehow got on a plane back to Connecticut, got to the office at 11:30pm – edited until 3:30am – had to lay off 2 different timelines to two different tapes – while these ran I typed up a rundown for the live event, got 30 minutes of shut-eye (not actual sleep) – got back to the airport at 7am local time, somehow got on a plane, got to Chicago, took a cab into town, and got the tape to the playback machine 30 minutes before it was needed. Then had to work all day!
Be careful and use your head.
Mike