The 6-day per week push/pull/legs split is similar to the 4-day per week upper/lower split, but you divide the upper body workout into a push muscle day (chest, shoulders, and triceps) and pull muscle day (back and biceps). This allows for shorter workouts, and/or allows for more volume per session.
The sequence would look something like this:
Monday: Push A
Tuesday: Pull A
Wednesday: Legs A
Thursday: Push B
Friday: Pull B
Saturday: Legs B
Each muscle group is trained twice per week. Total weekly volume is 12 sets per muscle group per week. If you do an additional set per exercise, it’s 18 sets per muscle group per week. These volume and frequency combinations are in line with the guidelines established by my Volume Bible and Frequency Bible.
Feel free to substitute similar exercises based on your preference.
Push A
Exercise
Sets * Reps @ RPE
Barbell Bench Press
3 * 10-12 @ 8-9
Machine Fly
3 * 12-20 @ 9-10
Rope Pushdown
3* 12-20 @ 9-10
Dumbbell Lateral Raise
3 * 15-20 @ 9-10
Pull A
Exercise
Sets * Reps @ RPE
Medium Width Pronated or Neutral Grip Pullups (weighted if necessary)