I’ll give a short explanation for those non-familiar with Forbidden Lands.
There are no hit points as such, damage goes to attribute points.
Simplifying a bit, when you fail a roll you can “push the roll”, which
means you can reroll some dice but any 1 will cause you damage to the
related attribute (it’s a dice pool system).
Attributes are Strength, Agility, Wits and Empathy. Physical combat
damage goes to Strength.
Damage to Strength and Agility is usually easy to explain. E.g. if you fail a dodge throw, push it and get damage to Agility, maybe your leg got cramped.
I think I can manage charisma but haven’t had the need yet. People get sick of putting a nice face to negotiate with others. Maybe someone said something that hurt you. Looks relatively easy, depending on the situation.
I do not know how to explain Wits damage in most cases, though. I used “You try so hard to remember that your head starts hurting” after three damage in a single Lore roll (that’s a lot). It was good for comic relief but it would get old quick.
The books seem to associate Wits damage with fear, which does not help much.
How can I realistically explain damage caused to wits when pushing the roll?