When I was in high school, an exceptionally popular varsity athlete was killed in his sleep by an anyurism. It was profoundly shocking to realize that things like that could - and did - happen.
Seemingly-healthy 28 year olds don't typically die at all, much less in non-obvious ways. An unexpected death rarely involves foul play. I'm sure the police are not ruling out possibilities at this point, but I'm equally sure that they are proceeding with the most likely avenues first.
