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I think so, but I never really measured the actual amounts I eat, and what, in both cases. It also heavily depends on what you're doing when sitting still: usin
by stinos 7y ago
I think so, but I never really measured the actual amounts I eat, and what, in both cases. It also heavily depends on what you're doing when sitting still: using your brain actively for work for instance is going to require quite some energy in comparison with just sitting still and relaxing. AFAIK the brain's main energy source is sugar so my (completely unverified - it's hard these days to find the truth amongst the insane amount of dietary bs out there) assumption is that physical exertion needs / can use different metabolic pathways not requiring instant sugar intake.
Something related happens to me as well, during light physical exertion: even when I get hungry, I can just keep on going and after like 30 minutes I don't feel the hunger anymore, and can keep on going for a couple of hours more. That just doesn't work for me when programming/debugging: then I keep on being hungry and after a while just cannot think properly anymore (could be placebo/confirmation bias, unsure.)
- taneq 7y ago> using your brain actively for work for instance is going to require quite some energy in comparison with just sitting still and relaxing Does it? I've always wondered if this was the case but according to this post it doesn't vary significantly: https://biology.stackexchange.com/questions/839/how-does-the-brains-energy-consumption-depend-on-mental-activity https://biology.stackexchange.com/questions/839/how-does-the...
- stinos 7y agoNow that's suprising, thanks.
- mannykannot 7y agoThere's a lot of metabolic and information-processing housekeeping that needs to be done regardless of what we are thinking about. Even the sleeping brain is quite active. The difficulty of hard mental problems is not necessarily related to the physical work needed, even when we recognize that information processing is a physical process - for example, figuring out when to leave for a lunch appointment is not necessarily less physically demanding than solving a differential equation.
- Quiark 7y agoAccording to my Google research, "brain activity" is not a valid excuse for eating more sweet snacks.
- xvilka 7y agoBrain can work also on ketones. This is exactly what is the point of keto-diet. It resists as much as possible to switching in this mode, I have to admit.