With recent implementation and continued tweaking of weariness I thought it prudent to suggest something in regards to it.
If not already a factor, how taxing certain types of menial labor are, should probably be modified by one’s strength. As, for an example, dragging around the logs to build a raft would take more out of a 6 strength weakling than a 12 strength laborer or 20+ metahuman. Perhaps have nearby tools for assisted lifting play a role as well.
Additionally, certain traits and mutations could interact with the system as well. (Ultramarathoners like Anton Krupicka and Scott Jurek are good real life examples of people who can run essentially all day non-stop), and Insects like ants are great at working themselves to death. Traits / Mutations which negatively effect how fast you weary yourself could be added as well.