when i first started lifting i trained 7 days per week, 20-40 sets per body part, to failur on every single set. 8-12 rep range.
worked real good for a year and a half or so, after that i made zero gains. would get great pumps, never any forward progress though.
started using gear about 2 years later, made some good progress. after about 6 months on gear, stopped making progress.
changed my training style a year ago to sub failure and lots of rest in between sets. started making progress again.
stopped making progress about 4 months ago. started focusing more on contracting the muscles instead of just feeling them. dropped the weight. still sub failure and still lots of rest between sets. making progress again.
rep range upper bdoy usually about 10 reps. lower body about 15 reps. total colume these days never more than 10 sets for a body part. smaller muscles sometimes just 2 or 3 sets total.
training schedule = every other day. body broken up into two workouts, so everything gets hit every 4th day.