[PERK} Thick Skull

Why is this a perk?  Because massive head trauma is a pain, and you can recover from it quicker.

3 levels.
+1 concussion healed per action spent per level.

If you have this at level 1, then each action spent resting will remove 2 points of concussed instead of just 1.
At level 2, you will heal 3 concussed per resting action.
At level 3, you will heal 4 concussed per resting action.

I think I've experienced this deja vu before...