"...you can look it up — I’ve had 34 carries in games and 40-something carries in games. I’m 26 years old, so it’s fine.”..."

No, it isn't fine.  CJ's yet to complete a whole season.

If the Broncos can rotate their season yet still provide an effective run game, I'd call that smart.  Was re-watching the game last night, and I started asking myself why the Broncos weren't using Charles more.  Then I got thinking, really why should they?  They're getting production while spreading the load.