Really glad I run yesterday. Temperatures are getting lower and it is snowing. I remember in the past going for a run no matter what. After a lot suffering and bothering throat, I just realized it was not worth it. Better to cross train (indoors), or rest, and save the running for another day. Not only I would be at a greater risk of getting sick, but also the ice on the road can be really dangerous. I think my new rule is if it is below 30F, don't go for a run outside.