I really hate my blood pressure/temperature regulation/whatever it is that causes me to get dizzy and nauseous and sweating/shivering if I suddenly go from warm to cold (or from very warm to normal room temperature, as last night when I got out from under the blankets.)

A similar thing sometimes happens if part of my body is cold while the rest is warm. Like that time I wore a sweater with a skirt and went outside in cold-ish weather, this past fall.