Last night I was lying in bed and was quite comfortable as luckily my old house stays quite cool. DH was snoring away facing me and with every outward breath a strong gust of wind was blown over me. I suppose it may have been cooling if I had been too hot.
DH had some investigations on his chest a couple of years ago and they discovered he has weirdly massive lungs so maybe that helps with the fan effect. Anyone want to borrow him? 