Constitution

Being the body's limit of endurance, this Statistic determines how easily a Character will become fatigued, the rate of healing, and his or her resistance to poison.
The abbreviation for Constitution is given as "CN".
Derived Statistics: 
Fatigue - Each point spent on Constitution equals +2 to your Fatigue pool. 
Heal Rate - This derived Statistic is somewhat self-explanatory; the Character's body heals at a rate proportional to this number.
A Character recovers from Fatigue continuously; Hit Points return only during sleep
Poison Recovery Rate - When poisoned, the Character's body will eliminate a number of units of poison proportional to this number every few minutes. These will be subtracted from his or her poison level. If the Character rests, the number of units eliminated every few minutes will double: a body freed from other distractions will devote all available resources to purging itself of the offending toxin.