8 Weeks, 6x per week
This plan originates from muscleandstrength.com.
It consists of 6 Routines between which you alternate: Push A, Pull A, Legs A, Push B, Pull B and Legs B.
This plan volume is particularly high (6 workouts per week), and is only fit for advanced practitioners. If you are not sure this is a good level for you, find the Novice version of this plan.
Perform 10 minutes of light cardio before starting the workout to warm-up.
Each workout starts with a heavy compound lift, followed by compound exercises using moderate loads and concludes with isolation exercises using relatively low loads.