How do you manage getting sick as teachers?

Hello All!                                                                                                                  So as my title implies I want feed back from others who work in the field of education. I want to know how you manage being sick? How do you keep from falling behind? There is only so much you can expect a sub to do when you are out right? I came down with some kind of Flu type illness this last week and it wiped me out! Luckily I only missed 2 days of school because Friday was a grading day but I feel I am just racing to catch back up! I am sure the fact I am taking classes and have homework as well is probably just adding to my stress and making everything seem more daunting. Anyways please give me some ideas! What do you to keep things running smoothly when your sick? And while we are at it… what tricks have you learned to help prevent yourself from getting sick??