I love summer salads, but I don't eat as many of them as I'd like to because it's so hard for me to keep lettuce and salad greens fresh in the refrigerator for more than 1 day at a time. But it seems FitSugar has the answer, and who knew it would be so easy? Just put your greens in a plastic bag, breathe a puff of air into it (for the carbon dioxide) and tie it at the top. Of course it will take up more space in your fridge this way and I'd make sure your family isn't sensitive about people breathing on each other's food, but if this works (I'm totally trying it) what an awesome trick!