About the Yeerk three-day time limits, since that post drifted across my dash just now.
I’ve always kinda hypothesized that the Yeerk homeworld’s rotation is rather slower than ours, and so what we think of as every three days would be every day for a Yeerk.
No idea if this holds up in practice, but it’s a thought
Yes, that works! Because we know that kandrona is their homeworld's sunlight. So maybe they evolved near the pole of their homeworld, and can survive months-long periods of only having an hour of sunlight per (72-hour) day.
That's also an interesting twist on the question of how hungry any given yeerk is at any given time. Like, a human can get by eating once a day — we might've done that for millennia, depending on how anthropologists interpret it — but that's probably not optimal for us. Two meals a day (e.g. ancient Egypt), three meals a day (e.g. modern U.S.), or continuous grazing (e.g. 1600s Haudenosaunee) seems to be better for our digestion. But there's some evidence eating once a day might be better for circulatory health.
There's also evidence that a human who eats once a day can get by for longer on less food than one who eats thrice a day. I'm a "miss one meal, pass the fuck out" type of modern human; my homeostasis demands that I eat every ~6 hours if I don't want to be unconscious. One meal every 72 hours sounds monstrous to me. BUT we know it's possible for humans to be happy/healthy with one meal a day if that's how they grow up. So I think "yeerks are constantly hungry" and "yeerks are comfortable, as long as they don't go 70+ hours without an hour in kandrona" are both valid interpretations of canon.
Plus: aliens. They can be as (un)comfortable with the feeding schedule as you headcanon them being.
