Stress and illness

I came across this wee bit of trivia the other day and well it answers some questions as to why I'm sick...

Researchers have discovered that events such as pleasant
family celebrations or evenings with friends boost the
immune system for the following two days. Unpleasant moments
had the opposite effect.

Now there says it all. Stress plays a key roll in our health. It makes us more susceptible to illness. Hence me having the head cold from hell and my daughter having a serious bout with the stomach flu.