During my teen years and early 20’s,I was working 7 days for years.Mostly doing 12/14 hour shifts,and hard ones at that driving equipment with out sound suppression or aircon etc.
I would be on a D8H for instance,or a TS24 (with those screaming Detroits) burning my right knee against the engine panel,and I would regularly start to go drowsie and almost fall asleep at around 11.30 am give or take.How anyone can drop off with a D8 converter howling away is a mystery to me,but I seemed to manage it.
The funny thing is,I’ve never been a good sleeper even now approaching 50.I can’t power nap or sleep on a plane etc,but if I do get a really good nights sleep,my mind is fuzzy and pretty useless.
Go figur.