I now don’t feel so weird about bringing a space heater to the office and keeping said office warm (boldface mine):
Central air hasn’t made us comfortable, so much as made us uncomfortable in a different way.
The experience isn’t simply unpleasant. It comes with a real financial cost.
To find out just how much, Cornell University researchers conducted a study that involved tinkering with the thermostat of an insurance office. When temperatures were low (68 degrees, to be precise), employees committed 44% more errors and were less than half as productive as when temperatures were warm (a cozy 77 degrees).
Cold employees weren’t just uncomfortable, they were distracted. The drop in performance was costing employers 10% more per hour, per employee. Which makes sense. When our body’s temperature drops, we expend energy keeping ourselves warm, making less energy available for concentration, inspiration, and insight.
Pretty much mirrors my experience. I find that when I have sit in a cold office for an extended period of time, I get really tired.