Can Run With Head Cold

I tried to run again yesterday in the rain with a head cold and managed to get eight miles in before calling it a day. It was like I had the Lady Bird Lake trail to myself. I saw another runner every half mile or so. My sinuses cleared and I felt great. This morning I worked out with my training group doing some intervals and then added a couple recovery miles to the end and have to say, my head cold is no worse and may be improving, just as it did for Dean Karnazes when he ran his 50 marathons in 50 states in 50 days.

Of course, running loosens up phlegm as well. Do I run when I have a cold? Yes, I do. Okay, go ahead and scold me--shame, shame--but I think the notion that you should avoid running when you're sick (unless a high fever is present) is an old wives' tale that's been perpetuated throughout the years without much validity.--Dean Karnazes

From Runner's World Magazine
SHOULD YOU RUN WHEN YOU'RE SICK?
Runners don't like to skip workouts--even when they're ill. Here's how to decide when you should take a sick day from training.