I'm not talking about prefatiguing (which would be doing something like 2 sets of 40 reps of light flies before doing bench presses) but exhausting the smaller muscle groups before doing the big compound exercise.
This is NOT something you'd do every exercise or even every week, but more something on the order of once every 4-8 weeks. Its more of a "shake up" move in that it causes you to work the muscles in a different way than your normal.
Specifically i'm talking about doing a full tricep with burnout prior to doing chest exercises. so something like
3 sets of heavy skullcrushers
3 sets of seated db extensions
3 sets of kickbacks
2 sets of 20-30 reps of triceps pushdowns
then on to bench press. Same thing for back, but biceps first.
The negative point of view is that your chest or back is so much stronger than your tris/bis that if you have weakened tris/bis then you can't thoroughly work out your chest/back as you won't be able to use heavy enough weights.
The positive point of view says that since these are compound exercises, there are points in the range of motion where the tris/bis provide more of the power than the chest/back. So by preexhausting the tris/bis you force the chest/back to be the only active force during the entire range of motion, stimulating the chest/back in a different way.
I like it, it seems to help and I see a jump in weights the next workout when I go back to chest first then tris. What do you all think?