I don't have any genealogical insights (I am half Armenian, half a mix of western European), but I am the same way. I drink iced coffees year round. I wear the

I don't have any genealogical insights (I am half Armenian, half a mix of western European), but I am the same way. I drink iced coffees year round. I wear the lightest thinnest jacket I can get away with in the winter. I sleep with a fan blasting. My best guess is it's a metabolic thing--I run a little warmer/faster than most (though I suppose that doesn't explain why). Edit: And to address the blood pressure comment, I have always had normal to low blood pressure, so I don't think it's that.