Once upon a time, you could camp in a place with area damage affects (frigid wastelands cold damage) and it would wake you but leave the "camp" affect in place. Along with the improved regeneration from it.
One of Pro's chars asked me to train shield cleave with him. Took as many cheap shields as I could and he cleaved them. Turned out at the time, cleave didn't remove the AC of the shield from your character. So I ended up with -1000s of AC. Still didn't make me invincible :(
Sportsmanship killed CF