When I catch a cold, I usually just work through it, i.e. take no rest day and try to live by the same schedule as when I'm healthy.
I already read on WebMD that this behaviour can increase the duration of the cold and / or worsen the symptoms, but can I also experience any long-term damage, e.g. from the additional ~3 days of coughing?
And how about when the common cold symptoms mix with flu symptoms?