Re:I'M A SHOWPONY, BABY!
The trouble with heavy sessions is that there are no grey areas, you either can or you can't. Anything under 5 reps and there is no digging deep to grind them out or anything it's just black or white.
But like you said to me, there becomes an inevitability where it does stall eventually. I wouldn't stress a one of as there could be any number of reason but maybe if it happens back to back your body is saying something
Limits, like fear, are often just an illusion: MJ 12/9/09 My journal