for the past two weeks, i've had that same dry, hacking, heaving cough. even worse when i lay down. i figured there was no way i'd be able to ride when i was coughing so much, but i went for my usual commute anyway and figured that if i couldn't make it, i'd have enough time to call for a ride. and incredibly, i didn't cough once while riding. i guess my brain was busy directing the blood supply to places other than the spot in the my brain saying "cough. cough now. harder. louder." when i ride, i feel pretty decent. it's when i'm sitting around that i feel rather lousy.