We all know that you can't "catch a cold from being cold," but feeling cold will affect your immune system, making it less able to protect itself from germs.

So whenever you're going to be in cold weather - make sure you're dressed right with long underwear, a warm coat, a hat, and mittens.

Check out these down mittens [1] from Sierra Designs. They come in 6 different colors, and are filled with toasty warm insulating down. And for $25, they'll keep your fingers warm whether you're out snowshoeing [2] or running to get the mail.

If you love those, you'll love these down slippers [3]. Great for keeping your tootsies warm when hanging out at home.