Say you're under the effect of a poison gas which deals d6 damage every hour. Is that considered
more strenuous than eating, drinking, reading, and tending to wounds. (PHB 186 Short Rest)
for the purposes of preventing a short rest?
This condition occurs in
Tales from the Yawning Portal's module Hidden Shrine of Tamoachan
and I'm unclear on the intent of the authors.
EDIT: In the original module it was damage per turn, and as you say there was no similar rest mechanic. The question is: is the module balanced with players being allowed to take short rests, or is the module balanced with players being unable to take short rests? Does that clarify?