scon the running may have temporarily cleared out your sinuses while your heart rate and body temp was elevated. it may or may not shorten the duration of your cold.
garlic has never been proven to stop the common cold. if it was, don't you think it would have been marketed by drug companies? the FDA is tough on claims like this.
garlic may alleviate some of your symptoms. chicken soup broth is good for relieving congestion. but it ain't a cure either.
cold weather does not give someone a cold. cold weather will bring more people inside together, like to movies, xmas parties, and airplanes. more people in close proximity allows the rhinovirus to spread like wildfire.
there are about two hundred rhinoviruses that cause the common cold. this is one of the reasons it has been so tough to find a cure.
microorganisms are clever and have learned over time how to reproduce successfully. they travel by sex, food, and water as well as airborne viruses such as the cold and flu.
scon i hope you are feeling better soon.