I am curious when you perform the rest action, can you choose which (sanity/health) recover or you just have to recover both? Did not find the answer so far, but the Scales of Thoth created that situation. Thank you.
You have to recover both if you can. The rulebook on Page 7, under the "Rest Action" heading says, "The investigator recovers 1 Health and 1 Sanity." There is no indication that an investigator can choose not to recover Health and/or Sanity when they choose to do the Rest action.