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(+1)

I want to start playing but I don't understand the meaning of a few of the stats. I'm assuming the brain is intelligence, the muscle is strength, and the heart is constitution, or something similar...

(+2)

They're intentionally left to your interpretation here, for my personal game, the brain represents mental health, the heart represents emotional health, etc. I felt like giving the stats hard names would limit the sorts of activities some might assign to them. Hope this helps!