True but generally not good information to propagate, not for selfish reasons, just because it sets an unreasonably high standard

It’s true you can knock out a 10-20hr session in essentially one sitting, but it’s not a good habit to set for yourself or the industry

This is probably a myth, but I've heard Kerouac wrote On the Road practically in a single sitting thanks to the peppy magic of Benzedrine, aka Bennies, a _widely_ available inhalant & pill form of amphetamine.