From everything I have read I can basically break routines down like this:
Begineer: Train each muscle group 3 times a week doing full body exercises
Intermediate: Train each muscle group 2 times a week doing upper/lower splits or other variations
Advanced: Train each muscle group 1 time a week using 4-6 day splits that isolate one or two muscle groups a day.
My PR's are:
1. Should I be training each muscle group once or twice a week?
2. What classifys as an advanced lifter? (strength, years trained, etc)
3. Do you have any personal experience from switching from 2 to 1 times a week or visa versa?