Turns out knives you can eat a surprising number of before it kills you

Account of a Man Who Lived Ten Years, after Having Swallowed a Number of Clasp-Knives

I would have also put 20 down on an expired certificate

I’m most familiar (although casually) either UK/EU rules, and this page has an excellent breakdown of what’s considered the bare minimum this side of the pond for safety.

https://www.gov.uk/guidance/drivers-hours-goods-vehicles/1-eu-and-aetr-rules-on-drivers-hours

Personally I prefer to have a 20-30 min break every 2 hours which leaves me feeling sufficiently refreshed, and conveniently works perfectly for changing a 64kWh EV enough to do the next leg at the same ratio. I honestly believe switching to an EV has forced me to become a safer driver with regard to taking breaks.