How many reps per set should I perform to build muscle?
This has got to be one of the questions I get asked most by beginners and even some more experienced bodybuilders.
- Is there an optimum rep range for hypertrophy (muscle growth)?
- How many reps per set should I perform?
In my experience, there is indeed an optimum rep range for muscle growth.
8 – 12 Reps
I have trained in all sorts of ranges for experimentation purposes. From experience I can advise you that 8 to 12 reps per set is the ‘Anabolic Rep Range.’ Up until about 6 months ago I was experimenting with the 4 to 6 reps per set range as in the Max-OT program by AST.
My problem with that is that it’s too damn hard to get good form when performing each rep with a weight that heavy i.e. If I’m curling a dumbbell so heavy that I can’t get any more than 6 reps, I find my form sucks!
At the other end of the spectrum, there’s the high rep theory. Basically anywhere between 13 – 25 reps per set would be classified as high reps. I personally believe that people who work out in this range are seeing some amazing pumps and so are convinced they’re getting big fast. However, getting a pump is not prerequisite for building muscle. A weight in this rep range is simply not heavy enough to force the muscle to continually adapt and grow.
So that leaves us with the sweet spot i.e. 8 – 12 reps.
Light enough weights for good form; heavy enough to force growth.
The National Strength and Conditioning Association also agrees with these relationships between number of repetitions performed and physiological responses. They propose that shorter bouts of anaerobic training (2 to 4 repetitions) are best for improving muscle power, moderate bouts of anaerobic training (5 to 6 repetitions) are best for building muscle strength, and longer bouts of anaerobic training, 8 to 12 reps per set, are best for increasing muscle hypertrophy.
So what about periodization? Periodization basically says that every now and then you need to work within a different rep range in order to ‘confuse’ your muscles into continuous growth. I have no experience of this being the case. Also bear in mind that in some sets you will perform 8 reps and some sets 12 reps and this is going to be all the variation you need.
The Exception to the Rule
Yep, there’s one exception – abs. When I’m working my abs I stay within an 8-16 reps per set for growth. I am using a slightly higher rep range simply because of the importance of good form. I perform sit-ups quite slowly and also hold the movement at the top for a second. There is just no way that I could get good form performing these sit-ups with weights that were too heavy. That’s it. Don’t sacrifice form for weight. Good bodybuilders feel the muscle, not the weight.
Also – Marathon, no-weight sit-up sessions won’t sculpt nice abs. So to the guys doing 100’s of sit-ups – you’re doing yourself a huge disservice. Lower, weighted sit-ups will grow those abdominal muscles more than anything else. Anyway, I’ll get into abs more in future articles. You can subscribe here to be notified when new articles are published. Alternatively, enter your email into the box in the sidebar to the left.
Thanks for stopping by.
P.S. Saw this on another website, the quote is from Tom Venuto:
“For example, when you train in the 6-8 rep range, the adaptations are still somewhat neural, but also metabolic/structural: In this rep range, you get excellent strength gains and also excellent hypertrophy. In the 8-12 rep range, there is still some neural adaptation, but less than the 6-8 range and much less than the 1-5 range. The advantage of the 8-12 rep range is that you get maximal hypertrophy”. Couldn’t have put it better myself.

















The Muscle Hacker is Mark McManus, a 28 year old guy committed to helping others build the type of body they desire. Mark is a naturally skinny guy who overcame the hardgainer's curse through years of research and personal experience. Whether you want to build new slabs of muscle or drop your body fat percentage to reveal
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@Bryan. You can’t spot reduce that fat on your lower back. You need to lose overall body fat with a combo of weight training, cardio, and most importantly, diet.
My book Total Six-Pack Abs details the full plan of action for acquiring a single-digit body fat percentage and getting that ripped look.
http://www.TotalSixPackAbs.com
First I would like to comment too the author on his experience with the Max-OT training method. I myself have not used that program but I do see the merrit behind it. I as well as you have used a large variety of rep ranges. What I have found is that they all have there place in physique development obviously depending on the purpose behind there use. I would like to add that most trainees grossely over estimate their correct weights to be using for such an intense form of training. Normally with men the reps are done with no consideration to the eccentric phase of the movement therefore when it comes to training with a method such as Max-OT the usual weight is far to heavy for proper eccentric control and in return the concentric phase is sloppy or as you have experienced to much body language is incorporated. My suggestion is in order to do the Max-OT training method effectively you must take a weight you can lower for 4 seconds through the full range of motion, pause at the bottom for a minimum of 1 second to show complete muscular control without momentum and then complete the concentric phase with maximum speed. That will be considered your actual 1 rep maximum with perfect form and quality. Now take 80-85% of that weight and now you have the weight you should start with for 6 reps. 90% for 4 reps. Each rep should be using a 4 second eccentric,1 second pause at bottom, and a 1-2 second concentric. At the top each rep you should have a pause at lockout to allow you to take in the maximum amount of breath to fill your lungs thereby maximizing your power center and concentration for each rep.
Remember there are 2 types of hypertrophy sarcoplasmic and myofibrillar. Max-OT focuses on the latter. With a proper periodization program one can get both. I would suggest a 5 part periodization program. Phase one would focus on the Vascular system to improve blood flow, oxygen uptake, and nutrient use within the muscle. Reps would be 25-50. Phase two would focus on sarcoplasmic hypertrophy which would maximize intramuscular fluid, glycogen, and fatty acids. Rep range would be 12-20. Phase three would focus on 6-10 reps which is the lower end of sarcoplasmic hypertrophy and is beginning to benefit myofibrallar. Here we notice density of muscle bellies without the loss of intracellular leverage and size. Phase Four would focus on mixed training. Here we use 4-6 reps. Obviously rest interval is much longer and fast twitch muscle fiber recruitment is higher than phase three. And finally Phase five would focus on absolute strength and speed. Reps 1-4. This five phase cycle should last 8-12 weeks, but can actually last up to 6 months if desired.
Using such a training strategy allows one to properly prepare the body for heavy weights by creating a powerful mind/body connection, improving recovery time between sets, reps and between workouts. It also eliminates alot of potential for lost time resulting from undertraining, and overtraining. It keeps the body moving forward with purpose to a peak and maximizes excitement and enthusiam for training.
Keep in mind that equally important to the success of this 5 phase program is the diet. Each phase requires different macronutrient combos inorder to maximize the effects from the last phase and the current phase. By far the diet is the most important aspect of any training programs success. My experience as taught me that any deficiency not corrected before any program begins is why training programs fail. Even one outlined by me is only as successful as the diet.
Best of luck
AL
Rep “range” isnt that important. the main thing is eccentric emphasis and time under tension
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