Cold Blooded

The cold blooded trait means your character's held to the whims of the enviorment.

If the weather is warm or hot your character gains a +5ft to movement and but burns through food twice as fast needing two full meals or rations a day or suffer from starvation, as well as -5 to checks to resist poison or venomous attacks

If the weather is cold or cool your character looses -5ft to movement, but metabolizes food slower needing only half a meal or ration a day to stave off starvation, they also gain a +5 to checks to resist poison or venomous attacks.