Training volume
Training volume is the total amount of work done, usually counted as hard sets per muscle group per week, and it is the training variable most closely associated with muscle growth.
Volume can be counted several ways. Total tonnage — sets times reps times weight — is the most precise and the least useful, because it rewards light weights for high reps. Counting hard sets per muscle per week is cruder and tracks outcomes better.
What counts as a hard set
A set taken close enough to failure that the last couple of repetitions are genuinely difficult. Sets stopped five reps short contribute little, which is why two people doing "the same programme" can be doing entirely different amounts of work.
The rough range
Most evidence points to meaningful growth from about 10 hard sets per muscle per week, with benefits continuing up to roughly 20 for many people and diminishing after that. Beginners progress on less. More is not automatically better, because volume you cannot recover from is volume that costs you the next session.
Why it belongs in a log
Weekly sets per muscle is a number nobody can estimate from memory, and it is the first thing to check when progress stalls. A log that records the exercise, the sets and roughly how hard each set was lets you count it in a minute, and lets you increase it deliberately instead of by accident.
Sources
- 1.Evidence-based recommendations for natural bodybuilding contest preparation — Journal of the International Society of Sports Nutrition
- 2.Physical Activity Guidelines for Americans — US Department of Health and Human Services
Related reading
- Training volume or intensity: what to track
Volume drives growth, intensity drives strength, and both are measured badly by tonnage. What each term means and which number belongs in your log.
- How many sets per muscle per week is enough?
Around ten hard sets per muscle group is where growth becomes reliable, with benefits continuing towards twenty. How to count them and when more stops helping.
- How to log your workouts in under a minute
A training log answers one question next week: did I do more than last time? What to record, what to skip, and how to read progress out of it.
- What to record in a training log, and what to skip
Four fields carry nearly all the information. A field-by-field account of what earns its place, what does not, and why the effort field matters most.