As a streak runner I have no choice but to go running anyway but I have always wondered whether that was a good idea. In truth, I typically feel better after running than just before. My personal theory is that running helps get the blood flowing and reduces things like congestion. It also stimulates the production of chemicals that generally make you feel better and more energized. Feeling run-down is the primary problem when I feel sick.
Fortunately, scientists look into this kind of thing. This article in science daily suggests that if you have a sickness “above the neck” then you should be ok to go running (or joggling). The scientists do warn that if you have a heart condition or diabetes than you should not exercise while sick, but for generally healthy people, no problem.
Incidentally, if you have symptoms like a queasy stomach or dizziness, you should skip your workout.
Of course, as I’ve learned, your exercising will have to be toned down a bit. Don’t expect to clock your standard minutes per mile pace while battling a head cold. Rather, researchers suggest that you go 50% slower and 50% less time. I’m not sure I would want to do that but I certainly have been doing slower joggling workouts.
Now, if only I could get over this cold!