work up

verb5

1. •
   To raise; to excite; to stir up.

   • He worked up the public's passions to rage.
2. •
   To develop.

   • I shall have worked up an appetite with all this heavy work.
3. •
   To give (a patient) a general medical examination to assess health and fitness.
4. •
   (no longer used) To use up (material, etc.).
5. •
   (no longer used) To set at an irksome or needless task.