Beginner: 3 full body days
Squat, press, and pull each session with a day of rest between. You hit every muscle two to three times a week, which is ideal for learning technique and driving fast early gains.
Three to five lifting days covers almost everyone; the real driver is hitting 10 to 20 hard sets per muscle across the week.
Three full body days works great for beginners, while four to five days lets you split muscles and add volume as you advance. What matters is weekly sets per muscle, roughly 10 to 20 hard sets, not the day count itself. More than five days rarely adds muscle and usually just cuts into recovery.
Squat, press, and pull each session with a day of rest between. You hit every muscle two to three times a week, which is ideal for learning technique and driving fast early gains.
Splitting into upper and lower twice each lets you add sets and exercises without any single session running past 70 minutes. This is the sweet spot for most lifters with jobs.
Only worth it once you need 18 plus sets per muscle a week and can recover from it. Extra days spread volume out, they do not create extra volume by themselves.
Three to five lifting days covers almost everyone; the real driver is hitting 10 to 20 hard sets per muscle across the week.