sets to failure on full body?

[gymforlife]

as the title suggests would it be best to go to failure on one set per muscle group or on a full body routine should no sets be taken to failure in a normal A and B routine

 

[LAM]

eccentric or concentric failure?

 

[gymforlife]

the positive part so concentric

 

[gymforlife]

?

 

[assassin]

it all depends on your periodization and it depends on every exercise seperately...you have to be able to feel yourself