pathyfizzy what? ha I'm not a book learner (only one book for me) more common sense here, no disrespect just the way I believe and learn, you and I see eye to eye sometimes but "clash" many others......not a scientific person just natural healing and "common know how".....think about it alpha, if you stand in the cold after your body has acclimated to the warm, your body is shocked, add to it the improper attire that sooooo many parents send their kids out in beginning of fall and their body is in even more shock, the body works so hard to keep a proper temp and fight the muscle reaction and "stress" that has been put on it, and say they don't wash their hands before afternoon snack 20 minutes later. The bodies otherwise "high" immune system has just become compromised by the "shock" it has gone through and is still trying to recover that....and BAM here comes a little bug that could normally be fought and.... sickness! So many people say, "winter clothing doesn't effect whether or not you become ill" I disagree, considering that analogy.