Its so typical as well. Got right back into running last week, ran 30 miles which is loads for me, then thursday night ran about 4 miles and thought i was going to be sick/ pass out or something and i thought something is wrong here, and what do you know, i woke up friday morning with a stinking cold which ive had ever since.
It also concerns me, that you know in that show You are what you eat, when they show all the unhealthy food they have eaten in a week and your supposed to feel ill from it, well when i watched it last week it had the opposite effect and made me want pizza, fish and chips and curry simultaneously!
I think at some point i have had a heavy fall on my head.