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Power Factor Mass Gain Workout on ESG


From 2014 to 2015 we ran an informal study among our customers to test several methods of training to see what specifically delivered the best mass gain.

Every participant did exactly the same exercises performed exactly the same way. They were divided into three groups who performed timed sets of 30, 60 and 90-seconds each. One set per exercise and only six exercises per workout.

They were required to perform at least 8 workouts over at least 60 days. Some took longer than 60 days but everyone did at least 8 workouts and never more than 10.

So what happened to these guys whose median age was about 50?

Every group averaged impressive gains, but the group performing 30-second timed sets was a standout from the others.

The results speak for themselves. These trainees gained mass and size at an almost freakish rate: a median of 7.2 lbs of muscle and two inches of size on combined chest and arms – from only 8.8 workouts!

I don’t even like reporting this, because it just sounds like the kind of ridiculous hype I dislike about the strength training business, but the reality is that people who did this workout during our little study gained 1/4 lb of new muscle per minute of training.

That’s a bulls-eye in terms of squeezing maximum growth stimulation from minimum time invested. It’s the reason we take all these measurements. There’s just no way a person would arrive at his peak level of power output time after time and trigger that amount of growth stimulation by stumbling around blindly with all the possible weights, all the possible reps, and all the possible days to show up at the gym – and still get peak power on every exercise the way our system does.

Engineered Strength Gym


The Engineered Strength Gym Tracks Your Progress

Objective numbers mean you see your progress in black and white. The numbers do not lie – either you are stronger than your last workout, or you are not.

Just do your workout – then tell us your numbers. We’ll take it from there and do all the calculations of of your Alpha & Beta Strength, your Volumetric Intensity, and your personal rates of progress and recovery. Then we’ll send your new goals and the earliest date of you could hit those goals – all based on YOUR personal performance.

You’ll receive an analysis of every Power Factor MASS GAIN Workout you perform.



Your new goals and your next workout date are all calculated based on your individual rate of progress and recovery.

This Workout is Intelligent

Why? Because numbers don’t lie. You’ll see your performance in black and white after you send us your data. Either you improved, or you did not. There’s no hype or muddled thinking. Science and math replace empty, macho talk.

This workout program is a true bargain. I guarantee you won’t find a nutritional supplement that could stimulate this much muscle growth. The MASS GAIN Study e-booklet is packed with info and it’s included when you sign-up.

You owe it to yourself to use this workout. It costs less than a bottle of supplements and it can be delivering results starting with your next workout. Really!


Engineered Strength Gym

Only $37/mo, including all calculations and analysis with the

Engineered Strength Gym.

Month to month, no commitments. Train with the Power Factor MASS GAIN Workout as long as you like, quit at any time, with no notice, effective when you say so.

Only $37/mo.

BuyThe e-booklet is included.


No worries: You’ve got my iron-clad 100% money back guarantee!

Month to month, no commitments.

If you don’t like the program, you can just tell me and I’ll refund your $37.

Our business is helping you build new muscle as efficiently and effectively as possible. And with objective measurement every step of the way you’ll see we deliver what we promise on every workout. What could be more fair than that?


Train with your brain,

Pete Sisco - World's Fastest Workout


Power Factor Training Minimalism Study

PFMS Headline

For about two years we’ve been running some informal studies to determine what tactics in the gym deliver the best gains of muscle mass and size.

So if trainees lifted all-out for 30, 60 or 90 seconds at a time, who would you guess gained the most mass and size at the end of eight workouts?

Well, it turns our the 30-second guys did. They did less – but they gained more mass. Remember that for a moment.

We also tested some other tactics:

  • Full range of motion
  • Strongest range of motion
  • Static Contraction using 1 set
  • Static Contraction using 3 sets

We reported on all of that here.

Right now we’re running another study to see what variations in training frequency can do to speed up gains.

You And I Can Study What We Want

This is the great thing about having our own community of people who are interested in rational strength training and appreciate the value of basic experimentation and gathering data. On top of that, it’s just plain fun.

I’ve realized that it’s like having our own crowd-funding site for things related to rational strength training. Everybody who reads this and is on my mailing list is a person with an awareness of the merits of taking a scientific, mathematical approach to weightlifting for functional strength gains.

Nobody else is doing this direct-to-the-customer stuff. At one end of the spectrum are the guys just pushing the same “3 sets of 10” for every exercise and “three days per week” for the rest of your life. Those guys aren’t curious or interested in new findings because their advice will never change anyway.

At the other end are some expensive university studies that are often funded by big operators with an agenda, like finding some food compound that has a minimal effect then building a giant nutritional supplement campaign around minimal and logically inconclusive results.

But we can do our own informal investigations into whatever we are interested in. Such as . . .

What’s the MINIMUM You Can Do?

What’s the minimum about of weightlifting you can do to trigger systemic muscle growth in your body? You might have read my interview with longtime customer Mark who says after years of overtraining frustration he used Power Factor principles to gain 35lbs of new muscle using only two exercises and eventually training only once every six months.

That got some of us on the blog thinking. What would be the minimum amount of exercise required to trigger growth and gain mass and size? Since we’re now sitting on a bunch of new data from the trainees mentioned in the above studies – and we know what mass and size they gained performing six different heavy exercises – it will be easy to compare “apples to apples” with how a similar group of trainees does with just two of those exercises.

Remember, the guys who lifted for 30 seconds outperformed the guys who lifted for 60 or 90 seconds? Is it possible that trainees who pour all of their effort and recovery resources into just two exercises will do as well? Might they do even better? Is less really more?

Right now we don’t know. But this simple little study could give us some exciting data that will point to an answer.

What will it mean if they exceed the current high-water mark of 7.1 lbs of new muscle and 2 inches of size with less exercise?

Let’s find out.


This variation of the Mass Gain study is called the Power Factor Minimalism Study. It uses just two of the six common exercises the trainees used in Part 1 & 2 of the study. We have their data. Next we’ll be able to compare it to this new data we’ll collect from trainees who pour everything they have into just:

- Bench press
- Barbell deadlift


We need several dozen people who would like to have their next 10 Power Factor workouts engineered by me in a way that maximizes their power output for optimal results. We are specifically aiming to increase both total muscle mass and muscle size and will measure those gains. (Lean mass gain, chest size, biceps size, waist size.)

Grip Strength as a Recovery Indicator

Since this study involves just two exercises, it’s a good time to test one other thing I’ve been wondering about for many years. Apparently some old time strongmen who did massive lifts for show purposes used their grip strength as a measure of whether or not they were recovered enough for a record lift.

So before trying to lift an entire wagon with ten men and women standing in it, they would first see if they could lift a certain weight using only their grip. As the story goes, this was a quick way they could measure their state of recovery without depleting themselves with a failed heavy lift. Maybe it’s true. Maybe it isn’t. But this would be a good opportunity to check to see if there is a reliable correlation between what your grip power is today and what you can bench press and deadlift.

So on this little study we’re adding the simple task of squeezing your bathroom scale the morning of your workout and recording the peak reading. Over ten workouts we’ll see if there is any validity to the old story. Frankly, I hope it is true because the world needs a quick and easy indicator of systemic recovery from heavy weightlifting.

Behold! A whopping 28.8 lbs of grip strength. (Hey, I was concentrating on getting the photo.)

To do this properly I need to interact with each participant. Specifically;

a) The results of each of your workouts needs to be sent to me via e-mail so I can analyze your progress and make adjustments over the period of the study. (An online form automates this and makes it simple for you.)
b) There will be only two different exercises and every workout will be the same. You can’t substitute exercises – we need barbell or machine bench presses and barbell or machine deadlifts. These are strongest range reps done in a power rack or Smith machine and you can expect to work up to heavy weights. All trainees will perform 10 workouts, as quickly as feasible, as determined by their progress and recovery data. Each schedule is customized to the individual.
c) You need access to a basic body fat scale or calipers so we know the difference between muscle gain and fat gain or loss. You also need access to a bathroom scale you can hold in your hands to measure your grip strength.
d) Diet is not being tested for this study so eating normally is fine.
e) As always, I have to make my medical/legal disclaimer that I am not a physician and have no way of knowing your suitability for strenuous exercise. The decision to lift heavy weights is between you and your accredited physician and I cannot assume the liability for your decision and participation.

The cost to participate in this study is only $55.

For that, you will receive;

– My personal coaching and encouragement via e-mail to wring everything you can out of these workouts.

– Each of your workouts will be analyzed and new goals will be engineered according to your rate of progress and your rate of recovery. These will be emailed to you. The objective is to provide you with 10 productive workouts.

– You will be first to receive the full report of what occurred and the first to receive any form of workout that might be derived from the data.

– But most importantly, you will have the satisfaction of DOING SOMETHING to move the world of strength training toward a model of testing and measurement in order to make intelligent decisions about what works and how well it works.

It will be fascinating to see whether the people in this new study can equal or outperform the gains from all other protocols.

Common Questions:

Is my age a factor? We have people doing the PF study aged from their 20′s to 70′s so if you’re in that range it will be fine. The median age of the previous groups was 51 years old.

Can I use rubber bands, bodyweight, etc.? No. You need access to moderately heavy weights that will exhaust target muscles within 30 seconds of lifting. Home gym or commercial gym does not matter but you need barbells or machines. Both the exercises are common ones. (See list, above.) Also, this is not a Static Contraction workout.

I haven’t been working out out lately, can I still participate? Yes. Everyone starts at whatever his strength level is right now and then works from there. You start by lifting a weight that feels heavy to you, whether it’s 300 lbs or 20 lbs. We are measuring the progress of people at all levels of strength and fitness.

Do I have to start immediately? You can start any time in the month of April, 2016.

I’m in Pete, I’d like to be in the Power Factor Minimalism study. $55.00


P.S. This has proven to be a fantastic way to leverage our little community of rational strength trainers. Your assistance is truly needed. And, hey, it will be a fun story to tell people and make the next couple of months more interesting.

“I’m interested but I have a question first.”