every once and a while a wrestler needs to give there body a break and they will take time off, thats hard to put into there story line so sometimes they make up injuries.. i'm not saying that they dont suffer from injuries from time to time, but in some cases its just the wrestler needing time off.
it happened to triple h a couple of years ago, and shawn micheals at the start if this year, Batista 2 years ago and only recently edge and john cena...
wrestling every week and having to practice for that shit must take a huge toll on your body....
And Eddie died from a heart attack, but it was revealed that he was a massive coke head and also did many othere drugs, but still R.I.P