okay i DO just have to say, no hard feelings, but fact wise, the cold does NOT make you sick and its so annoying to hear that fact. if that WERE a fact everyone in snowy states would be darn near dead! LOL. the cold does not make you sick, you need germs to make one sick, however the colder you are the lower your IMMUNE system becomes, opening your body to illness more. but if you are a healthy person withought a compromised immune system, your chances of getting sick are still slim unless you run into a super bug. away from that note, i would swim if it were atleast 65 outside. BUT i have been in illinois the past 7 years and dang is it cold! talking -30 with windchill. so when we go in february im SURE ill be in the pool a couple times! lol its all about what you are acclimated to.