It depends on how you feel. I've worked out sick, and realized that I couldn't. Follow your body and realize, even though you might feel guilty or lazy, that it's better to skip a workout than make yourself worse.
Fitness Minutes: (38,103)
38 2/23/13 6:00 P
I received my fitbit on the 15th and promptly developed a cold. :( I managed to get my 10,000 steps in without fail. I really wasn't knocked out for more than a couple days. I still have lots of crap coming out of my nose, but otherwise I'm feeling great and definitely on the mend. I've been able to really workout the whole time, I was just feeling tired for the first couple days of the cold.
It really just depends on the sickness and how it is affecting my body.