I just saw this video, where three people were sat down in a garage space, each had to press a button after 60 minutes. I wonder what could be useful techniques to get as close as possible to 1 hour, without any clocks?
In the video they used the chair, and what they have had on them to stay in count. Also, what could be a way to make it say 5 hours without getting insane?
The video: https://www.youtube.com/watch?v=asFITwxXbGw