work up an appetite

To become hungry after engaging in some activity, typically one that is physically strenuous. You've been out building that fence for nearly three hours. Come on in for lunch—I bet you've worked up an appetite!

See also: an, appetite, up, work

See also:

work up a thirst
appetite
get up an appetite
get up a thirst
thirst
settle down to (something)
rest on (one's) oars
rest on your oars
limber up
get (one's) breath back

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