Can I assume that even though I am a bit of a germ phobe that my body is on a daily basis exposed to cold germs? I try to be careful about keeping my hands clean and not sticking them in the wrong places (mouth, nose, eyes ?). If I am constantly exposed to cold germs and I don't always get a cold can I assume that normally my immune system can fight off cold germs? If I eat well, sleep well, and have a job that requires the expenditure of a moderate amount of energy can I assume that my immune system is best prepared to defeat cold germs that might get into me? If on the other hand my diet is not optimal, I don't sleep enough or don't sleep well, and I work to exhaustion that my immune system is then not at peak performance and not best prepared to fight off cold germs? If a cold germ manages to infect someone can I assume that there can be a spectrum of outcomes, from no signs of sickness to death from complications? Thank you for any help or suggestions. Getting over a cold and pissed at getting sick.