insidious said:
What is the point of 4 sets vs. 3?
Is that 4th set really worth it, or can you accomplish in 3 what you can in 4?
Sets & Reps
Sets x reps = volume
Volume stresses your body, forcing it to adapt (GROW)
How much volume do you need to stress your body so it grows?
Beginners can't handle volume well, therefore start low:
-bodybuilding: 3 sets of 8
-strength/mass: 5 sets of 5
Both equal ~25 reps.
Next
The more you advance, the more volume you can take. Where a beginner will have heavy soreness from squatting 3times a week, advanced trainees can handle daily squat sessions without feeling much soreness.