Quote Originally Posted by 'wowphreak',index.php?page=Thread&postID=182619#po st182619
What I do is when I have rested state run some instances till I burn off the rested state then run quests afterwards.
I did this with my very first character. It took me 23 days to 60. Now, granted, I did a LOT of PvP during that time, it was still a solid 18 days of leveling. Subsequent toons were done in half the time.

You have the same amount of rest whether you kill stuff in or out of instances. Instance kills (elites in general) are worth more then outside (non-elite) kills. So in an instance you will burn through your rested XP faster. But! When you quest you are getting both quest XP and the XP from killing stuff on the quest. Quest XP (I am fairly sure we all know) does not count against rest. So when you quest and kill you actually push your rest out further. This means you rest lasts longer which equates to more XP an hour because the XP you will get from an hour worth of quest is greater then what you can gain from an hour in a dungeon. That increases even more when you are getting rested XP while questing.

Now, should you never ever run an instance? Of course not. You want to run them for drops, for instance quests, because you are tired of the outside world and questing. To run instances to burn off rested XP and then go quest is the wrong reason to run as instance, it is not the most efficent way to level - if that is what you are going for.