Question for WoWers.

Last night I was playing Warcraft with someone else I met whie playing, and we were doing some quests that would’ve generally been too hard for me as they were a level or two higher than me. Consequently, I ran out of mana while attacking something (I’m a mage gnome, at the time, level 20), so I ducked off somewhere and drank a “minor mana potion” and got right back to attacking.

After the area was cleared, I noticed my mana level was over 100 points higher, and I was fully rested, even after attacking for about 10 minutes. I went from level 20 to 21 in 40 minutes flat because of the extra XP from being fully rested.

Was it a bug? I know rested has nothing to do with mana and the potion won’t raise your mana level… and I can’t think of anything I might’ve done to increase my mana and stay fully rested the entire time.

(I tried to Google but I’m at work and all sites labeled “Games” are filtered and blocked)