Quote:
Originally Posted by SmutGiant
from what I read a long time ago in some fitness book is, if the cold is only above the neck then yes it's ok to exercise, otherwise no.
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That sounds about right.
I'd think you'd want to remove as much stress from your body's metabolism as possible so it could react to a virus or infection most effectively. A Fever, for instance, is a carefully regulated increase in temperature to aid your immune system in doing what it needs to do. Increasing your metabolic rate in times such as those seems it'd just toss that balance out of whack and make the job your body's trying to do harder.