"It's not like digging ditches. It doesn't necessarily go faster as you work longer hours or take fewer days off, any more than you can save time in the long run by not eating." (As spoken clearly by someone who's had all info about Rings of Sustenance carefully removed from his environment.)
"Speaking of which, I should get some food," and if they can tell he's also taking a moment to recover, good on their inferential capacities.