FLU FACT OR FICTION? “Wear your jacket or you’ll catch a cold!” We’ve heard this chorus from mothers for generations, but is there any truth to it?

Yes and no. Your mom’s partially right (you should wear a coat when the weather calls for it), but that’s not how you catch a cold or flu (coming in contact with the virus is). In fact, being outdoors and getting some moderate exercise might do you some good. Get more immune-boosting tips in “Doctors in the House” (page 53).