So I am seating here in a sweater inside a building with door closed and vents shut down so I can keep my office warm. My desktop (more like a small server with two quad cores), is acting as my heater.

Everyone seem to be fine in just shirt/t-shirts. I need a sweater so I won't freeze. Kind of have been like this for a while since I lost bunch of weight. Not sure if it's because low body fat, or something might be wrong with me. Need to remember to ask doc next time I visit. Although in my experience they are usually pretty clueless if it's not something obvious.