I had a thought about bodybuilding the other day and I was hoping some of the more experienced vets around here could help me sort it out.
Basically, what puzzles me is the following.
Whenever someone comes around and says something along the lines of "you don't need to do curls/ext. because your bis/tris are hit by chin-ups/pressing," more experienced lifters are very quick to point out that some direct training for the muscle group is closer to optimal.
Likewise for legs, well-rounded splits hit the big compounds of course, but are bound to have calf-raises, curls, and extensions. What puzzles me is that you hardly see any isolation work for the glutes (something like a weighted or banded glute bridge) as most seem to rely on the fact that they are worked during squats, rdl's, lunges, etc.
Can anyone explain the discrepancy?