Saturday, December 26, 2009

Starve a run. Feed a Runner? Should I Run When I'm Sick?

"Should I run when I'm sick?" A question almost every runner has asked himself/herself at one point or another. Sometimes the answer is obvious. If you're bent over the porcelain throne paying homage to the intestinal gods, then running is probably the furthest thing from your mind. But what about when you just have the sniffles, a cough, or low-grade fever?

Murphy's Law always seems to kick in when you get a cold. You're healthy all year long and then four days before that big 10K, you come down with a cold. In my case, I can almost predict it. I've often wondered if it might be related to my training. It's odd, because moderate amounts of running actually boosts your immune system helping your body fight off colds. But maybe I push myself too hard at the end of my training and end up lowering my body's defenses due to the extra stress. Seems to be some research supporting my theory. One study shows that after a hard workout session, you can lower your body's immune system for up to 9 hours following the workout. So, if you're exposed to some of the nasty colds going around shortly after having had a really hard workout, you might be more susceptible to catching one. Might be worth wearing one of those masks and slathering on the hand sanitizer after such a workout!

So, what do you do if you aren't feeling well. Should you run? I asked my doc, and he said checking your resting heart rate is a good method to help determine whether or not you should run. Check your pulse for a full minute. Be sure to do this while at rest (not after climbing a flight of stairs). Also be sure you haven't just downed a Starbucks venti espresso. If your heart-rate is a few beats faster than normal, this could be a sign that your body's fighting off and infection and you may want to hold off on that run. Taking your resting pulse on a regular basis (just after waking up) is a good habit to make. A normal resting heart rate can be anywhere between 60-100 beats per minute. You you need to establish what's normal for you. If you're a runner, don't be shocked if your regular resting heart rate is lower than 60. That's pretty typical.
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My doc also said that the "head/chest test" is another good measure to use in determining whether or not to run. If your symptoms are limited to the neck up (runny nose, mild sore throat, and itchy, watery eyes), then it's probably okay to run, but at a lower intensity than normal. If your symptoms are presenting themselves in your chest or lower (heavy, productive chest cough, aches and pains, fever), then ix-nay on the unning-ray. You should be fever-free before running.

8 comments:

Kelownagurl said...

This post is timely for me. I have a cold and decided to run today. It wasn't my best run but I survived and I'm glad I went. :)

RunnerDude said...

Hey Kelownagurl! Good for you! Hope you're feeling better soon!

Christina said...

I usually do try and run but its a trade off, if I continue to run myself down, I feel horrible and could stay sicker longer.

ShutUpandRun said...

I've never tested my resting heart rate, so like so see what it is on a normal day for a baseline. Great post. It's a good question. You don't want to push too hard and get more run down, but there are times when running can actually make you feel better and give a boost (like with a minor cold). Thanks again, RD, for great info!

Kathy said...

I just wanted to thank you so much for your blog. I especially appreciate the fact that in the summer, your weather is similar to mine. Today i got up early so I'd only run in 85-90F weather. :)

Anyway, just a post from the south thanking you. I got into running while trying to lose weight (still working on that but have kept 15 kilos off for a year now) and really enjoy it - enough that I'm looking for a 1/2 marathon.

RunnerDude said...

Hi Christina! Yep, it's a fine line between pushing through it and overdoing it. Hope we all stay well in 2010!

RunnerDude said...

Hey ShutUpandRun! Thanks! I know what you mean...sometimes (no matter how I feel), if I don't run for very long, i feel terrible.

RunnerDude said...

Hi Kathy! Thanks for the feedback and your support of the blog! Means a great deal! Your weightloss and keeping it off is awesome! Let me know when you start training for your half-marathon so I can root you on!