A bee just flew in, and I let him wander around for a while until he realised there weren't any flowers in here and left through another window.
When I lived in the US (both in California and in Texas), my day would often proceed from my air conditioned house to my air conditioned car to my air conditioned office, and back again. I still have to put up with an air conditioned office here, but I sure get a lot more fresh air exposure at home (with the windows open) and on my commute (on my bike) than I had previously. It feels good.