When a cold is a flu and how to treat both
5 November 2012 Last updated at 11:25 GMT
You wake up sweaty, bunged up and your throat hurts.
Time to call in sick or do you struggle in regardless? A new study has suggested one in three of us feels pressurised to go to work if we have flu-like symptoms. But should we be going in?
Virologist Professor John Oxford is flu expert at Queen Mary Hospital, at the University of London.