

No, nothing like that really. Sure, my body was running on serotonin after a while so I was probably unduly relaxed and positive, but nothing like hallucinations or anything. When I found that that the no-sleep record was only 3 days longer than I had gone, I was a bit surprised, since it hadn’t really seemed that hard so far, but I am sure that I would have experienced something more serious before long.
I had the usual lessons at primary school, but at the end of those myself and one other in the class still couldn’t swim. In the half century since then I have never found the need or the desire to try again.