Being Sick

Do you know what I hate? Being sick. It just makes you feel like crap. I mean, you already feel horrible, but when you miss school for it, you dread going back because of assignments and crap you'll have to do. My suggestion? Just don't get sick. But how do you avoid  getting sick? Don't eat crappy food? Not eat food you've dropped on the ground?  I don't actually think there is a way  to not get sick, unless you have an immune system made of iron, and I think that would be physically impossible to do. Also, I hate the feeling of missing out on stuff that friends have done.  When you do get better, and go back to school,  all your friends will be making jokes about stuff they did while you were gone, and when you ask it's all like "Sorry, inside joke, " or, "You just had to be there."  Immense  aggravation on my side. >:(