Occasionally (more than I should)......
I'll sit on the coffee table and play a game on the Wii.
This puts me in direct line of the convection blower output.
When I am done researching (playing) and get up I find I am cold for the next hour or so.
Hate to feel cold and look over at the the room thermometer and see it is at 74
If you have a cold coming on I have had great luck with Zicam chewables.
Seems to knock it out before it starts. No colds this year since I started using it at the first symptom.
---Nailer---