[jams]

I saw a older usher at a baseball game the other night with a plastic soda bottle wrapped in aluminum foil. This brought back memories to when I was in elementary school. Whenever we went on a field trip, we always wrapped our soda/juice cans with aluminum foil. Looking back it seems like a silly/useless practice but we didn't question it back then. We just though it would keep the cans cooler.

Did anyone else do the same thing? Maybe there is some science behind the aluminum foil trick.