-When weights are not racked properly.
-When the gym is packed.
-When someone steals my weights or station.
-People talking, laughing, grunting, moaning, yelling etc... loudly.
-People hogging shit, taking too long on something, etc...
-Gym employees are lazy.
-People that really stink beyond rotten.
-Guy working out with his girl and looking upset cuz everyone checkin her out.
-Anyone drawing unnecessary attention to themselves.
-Anyone interrupting my focus/rhythm.
-Old people.
-Mexicans.
-People that hop from machine to machine to machine...
-Fuckers hanging out in the bathroom naked.
-Stuck up bitches.
-Constant broken machines or cardio equipment.
-Foreign languages.
I'm sure I left some out, but that's a starting point.