But if you find yourself getting sick over and over, it's probably more than just simple exposure. We are all exposed to hundreds (if not thousands) of bacteria and viruses on a daily basis, but if your immune system is in good shape, your body should be able to fight most of them off before you ever come down with anything.
If it seems like you're sick practically all winter long, it's probably time to take a good look at your immune system and find out why this is happening, and what you can do about it.
Here are 6 reasons why you may be getting sick on a regular basis - and some tips for staying healthy!