This datapack modifies the Weak Arm's debuff for the Feline origin from the Origin's mod. Instead of limiting the stone you can break, it adds a medium hunger debuff which makes it more enjoyable for the player.
Exhaustion: 0.6
If you want to change the exhaustion, go into the zip file and go to data-->origins-->powers-->weak_arms.json and modify the amount.
Note: I am unsure of which versions this will work on, I believe this will work on either Fabric or Forge and on any Minecraft version—but, I do not know. If you want to be helpful and tell me what versions it works on, go ahead and I'll list them!
IMPORTANT: Like many datapacks, this will require Paxi or Moonlight lib or a similar loader to work. You'll need to put the datapack in the respective folder.