The 'More is Better' Mindset
Walk into any gym, and you'll find a culture that often glorifies sheer effort and volume. The belief is simple: the harder and longer you work, the better your results will be. This leads many to adopt high-volume routines, performing endless sets in pursuit
of strength and muscle growth. The underlying assumption is that progress is linear and directly proportional to the amount of work put in. While dedication is crucial, this mindset can lead to long, grueling workouts that may not be as productive as they seem. It can also be a significant barrier for those with busy schedules, who may feel that a shorter workout isn't worthwhile.
Understanding Diminishing Returns
The principle of diminishing returns states that as you add more of one input, the output you gain from each additional input will eventually decrease. Think of watering a plant. The first bit of water is essential. More water helps it grow. But at a certain point, adding even more water doesn't help; it can even harm the plant by waterlogging the roots. The same concept applies to strength training. The first few sets for a muscle group provide a powerful stimulus for growth. As you add more sets, the benefit you get from each one gets smaller. Eventually, you reach a point of "junk volume," where additional sets primarily add fatigue without sparking significant new growth.
What the Latest Science Says
Recent research has provided a clearer picture of this dose-response relationship. A growing consensus, supported by multiple meta-analyses, suggests that for muscle growth, the 'sweet spot' for most people is between 10 to 20 hard sets per muscle group per week. A 2024 large review confirmed that while higher volume leads to more growth, the gains become marginal the higher you go. Going from 5 to 15 weekly sets yields significant benefits, but the jump from 15 to 25 is much smaller and comes with a higher recovery cost. One fascinating 2026 study even found that a group of lifters who did not increase their training volume saw greater strength gains than groups who increased their volume by 30% or 60%. This highlights that blindly adding more isn't the answer.
Quality Over Sheer Quantity
The numbers only tell half the story. The discussion around volume assumes that all sets are created equal, which is far from true. A 'hard set' is one taken close to muscular failure, where you have maybe 1-3 repetitions left in reserve. Ten focused, intense sets spread throughout the week will almost always be more effective than 20 sloppy, half-hearted ones crammed into a single session. Research also makes a distinction between 'direct' work (like a bench press for the chest) and 'indirect' work (like the triceps involvement in a bench press). Focusing on the quality and intensity of your direct sets is paramount before worrying about piling on more volume.
Are You Doing Too Much?
Hitting the point of diminishing returns, or even overtraining, can manifest in several ways. The most obvious sign is a plateau, where your strength and muscle gains stall for weeks despite consistent effort. Other red flags include persistent fatigue that daily life can't explain, a decline in workout performance, increased irritability, poor sleep quality, and the emergence of new, nagging aches and pains. If you're constantly sore and your motivation to train is plummeting, it might not be a sign you need to push harder, but rather that you need to train smarter and potentially scale back your volume to allow for better recovery.
Finding Your Personal Sweet Spot
The 10-20 set weekly range is a guideline, not a rigid rule. The optimal volume is highly individual and depends on your training experience, genetics, recovery capacity, nutrition, and stress levels. A good strategy is to start at the lower end of the effective range—around 10-12 hard sets per muscle per week—and focus on progressive overload by getting stronger in that range. Only when progress truly stalls should you consider gradually adding more sets. It's also more effective to spread this volume across at least two sessions per week for each muscle group, as there seems to be a cap on productive volume within a single workout, often estimated around 8-10 sets.
