one rule of thumb is:
above the neck = run
below the neck = don't
so if it stays above the neck with just head cold symptoms: runny nose +/- sore throat, then you are probably safe to run
But if any symptoms below the neck:
fever, cough, shivers, upset stomach or urinary symptoms, then don't run. You'll feel awful if you do and there is a very slight risk of a condition called myocarditis were the infection spreads to heart muscle.
I have run a race with a heavy head cold. I actually felt better afterwards but my performance was below par, because I took it easy.
good luck if you run,
if not, good luck with the next one
eamonn clarke
