I've noticed a lot of the more experienced bodybuilders don't seem to really plan their workouts, rather they judge how they feel that day, what feels like it needs more work, and just go with what feels right for their daily workouts.

I'm curious if this is advisable for more experienced lifters, even beneficial in your opinions? I can see how this could be more fun and interesting. But, could it be a problem not repeating same exercises weekly to grow in them?

What are your takes?

225, 6', 16% bf, bench 320, squat 405, dead 465.