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Crashing Through the Growth Threshold

Legendary Pro Bodybuilder Lee Labrada
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Q: You’ve mentioned the Growth Threshold a few times. What is that? What does it mean and how do I use it to get bigger?

A: Growth Threshold is a term we borrowed from champion pro bodybuilder Lee Labrada, pictured below. Here’s Lee’s explanation, from our 4X Mass Workout e-book:

The growth threshold is the point at which the level of fatigue in the muscle is high enough that a growth response is elicited. Your goal during a workout should be to fatigue the target muscles you are training more and more with each succeeding set. In other words, you want the muscles to progressively get more and more tired out, until you reach a point where the muscles are functionally ‘worn out.’ Signals are sent to the brain that set up the compensation, or growth, process during the postworkout period, so that in future workouts you can handle it.

Pro Bodybuilder Lee Labrada doing cable curls, Mike Neveux photo

Because you use the same weight on every set of a 4X sequence, and the first two sets are fairly easy, you gradually approach the growth threshold. The short 30-to-40-second rests between sets ensure that fatigue accumulates to a size-triggering climax at set 4.

For those not familiar with 4X, you take a weight with which you can get 15 reps, but you only do 10 deliberate reps; rest 30 to 40 seconds, then do 10 more. Rest 30 to 40 seconds again, then do 10 more. Rest 30 to 40 seconds one last time, then go to failure. If you get 10 on that fourth set, add weight to that exercise at your next workout…

Jonathan Lawson doing cable curls

As Labrada says,

I do not let my muscles regain all of their strength before starting the next set. After all, my goal is to fatigue my muscles more and more with each succeeding set until they hit the growth threshold.

And that’s what 4X sequences are all about—reaching the critical growth threshold without overtaxing the body’s recovery systems so you continue to ignite new, dramatic muscle growth at every workout. 4X training will give you size increases in both the myofibrils, the actin-myosin strands that produce force, and the sarcoplasmic endurance fluid in the muscle fibers.

And if you use a 4X sequence on the full-range 3-way Positions-of-Flexion programs for each muscle—midrange, stretch, and contracted, you reach the growth threshold for each and get a triple dose of muscle growth.

Get More 4X Info

NOTE: If you’ve been training with standard myofibrillar-dominant heavy sets—tension times of 20 seconds and rests of 2 minutes or more—you may want to increase your sarcoplasmic mass with a few weeks of PURE density training. For that, give 10×10 training a spin. You take a weight with which you can get 20 reps, but you only do 10. Rest 30 seconds, then do 10 more—and so on until you complete 10 sets. The last few rounds will be brutal, but the pump and sarcoplasmic size you ignite will be unreal. Use it on only one exercise per bodypart—10 minutes for each—for two weeks and watch the amazing changes in your physique.

Get More 10×10 Info

Till next time, train hard—and smart—for BIG results.

—Steve Holman and Jonathan Lawson
www.X-Rep.com


Build MASS with bodyweight training

One way you’re guaranteed to pack on stacks of muscle is through a process called muscle protein synthesis (MPS), which more than doubles 24 hours after an intense workout…

Until recently, MPS was only elevated when trainees would lift 70-90% of their one-rep max…



That’s not only dangerous for your joints, but it also sets you up for high injury risk every time you exercise…

It used to be believed that training with your own bodyweight couldn’t get you the same results as training with your 70-90% one rep max… Until NOW. 

–> How to build MASS with bodyweight training

Build Mass with Bodyweight Training

Filed Under: X Files Tagged With: 10x10 training, 4x mass workout, 4x sequences, 4x training, actin-myosin strands, bodyweight training, fatigue, growth threshold, Lee Labrada, muscle protein synthesis, myofibrils, pro bodybuilder, sarcoplasmic growth

The Squeeze Technique for a Massive Physique

Contracted leg extensions
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

Q: A friend of mine used to compete in bodybuilding contests, and he swears that practicing his posing improved his muscle size and shape. I think it was all in his mind. There’s no resistance when you flex, so it couldn’t build more muscle. I think he believes it did because he just happened to be getting more and more ripped from dieting and training, which made him look better every time he practiced posing. What do you think?

A: Yes, as you get more and more ripped, you’ll definitely look bigger, even as your bodyweight drops. A fat-free physique creates the illusion of mass, as you can see from the photos below of Jonathan from our X-treme Lean e-book. Nevertheless, you’re friend is also right… [Read more…]

Filed Under: X Files Tagged With: 4x training, blood flow blockage, bodybuilding, fatigue, flexing, look bigger, massive physique, mike westerdal, occlusion, physique, positions of flexion, protect your family, ripped, sarcoplasm, sarcoplasmic expansion, self defense, squeeze technique, x-centric training, x-treme lean

5 Critical Keys to More Muscle Mass

Jonathan Lawson muscular - Step Back to Move Your Muscle Mass Forward

Q: I understand that heavy weight isn’t important for maximum muscle growth. Can you tell me what I should include in my workouts to build the most mass possible in the shortest time. I want to get bigger.

A: Well, “heavy” weights are important, but “heavy” is relative to YOU—and dependent on muscle fatigue. You may struggle with 20 pounds in a certain exercise at the END of a bodypart workout. So that 20 pounds is “heavy” for you on that exercise at that moment… [Read more…]

Filed Under: X Files Tagged With: change to gain, continuous tension, fatigue, heavy training, hypertrophic, hypertrophic tension time, keys to more muscle mass, muscle fatigue, muscular fatigue, myofibrils, sarcoplasm, stretch, synergy, tension time

Rest Between Sets Confusion

Jonathan spotting Steve for hammer curls - Build Freaky Forearms

Q: I remember reading in your newsletter not too long ago when you mentioned that the rest time between sets during a [10×10 sequence] should be 20 seconds. In the 10×10 e-book you say to use 30 seconds between sets. Is that a deliberate reduction, and if so, should I reduce my starting weight a little to accommodate the reduced rest?

A: Rest between sets during a 10×10 sequence should be anywhere from 20 to 30 seconds. Vince Gironda, famous Hollywood trainer known as the Iron Guru who trained Larry Scott for his first Mr. Olympia victory, liked to continue to gradually reduce it over many workouts till the trainee was down to only about 10 seconds of rest or less between sets. That doesn’t work for many trainees because of having a training partner… [Read more…]

Filed Under: X Files Tagged With: 10x10, arnold schwarzenegger, Charles Poliquin, clint eastwood, density, fat fuck, fatigue, larry scott, legend & myth, master trainer, mr. olympia, rest between sets, skin-stretching pump, training partner, vince gironda

Are Behind-the-Neck Pulldowns Safe?

Jonathan Lawson outside

Q: I’m in the first phase of the Size Surge Workout, and it’s incredible! I’ve already gained 4 pounds in three weeks. That’s more than I’ve gained in the past year. I’m super psyched for the next step, so I was looking over phase 2 and noticed behind-the-neck pulldowns. I’ve read those are dangerous. Can I substitute something else?

A: Behind-the-neck pulldowns should be safe for most trainees in the phase 2 Size Surge program because of 3 reasons: [Read more…]

Filed Under: Uncategorized Tagged With: behind-the-neck pulldowns, fat burning, fatigue, over-40, phase 1, phase 2, rotator cuffs, size surge workout, testosterone, Truth About Testosterone

Moment of Bodybuilding Zen 16: Lee Labrada

Lee Labrada never won the Mr. Olympia, but he got close due to his incredible symmetry, proportions, and muscle size and density. An Iron Man editor (Steve) gave him the monicker “Mass With Class” back in the ‘80s for good reason–his physique was a work of art (photo by Michael Neveux)… [Read more…]

Filed Under: X Files Tagged With: 4X, 4x mass method, after-40 muscle building, bodybuilding zen, density, fatigue, free pro-x10, free probiotics, free supplements, gas, growth threshold, iron man, Lee Haney, Lee Labrada, mass with class, Michael Neveux, mike mentzer, mike neveux, mr. olympia, muscle size, pro-x10, probiotics, proportions, protein farts, symmetry

High-Rep Overload for Muscle Growth—How Much Is Too Much

Q: I’m intrigued by the Super TORQ ultra-high-rep approach. But I’m also making great gains with your standard 3-exercise Positions of Flexion training. Can I use his method on one of the three exercises for each bodypart in the POF routine, or would that be too much?

A: If you’ve read the interview with Doug Brignole in The Ultimate Power-Density Mass Workout 2.0 and checked out his program there, you can see that he only does ONE key exercise for each target muscle with that extreme high-rep approach…

[Read more…]

Filed Under: X Files Tagged With: belly fat burn, cardio, Doug Brignole, fat loss, fatigue, gains, growth hormone, heavy training, high-rep, high-rep overload, hormone trick, hypertrophic, metabolism, muscle growth, muscle pump, POF, positions of flexion, pump, pyramids, semi-heavy, Super TORQ, tension overload, tension time, tension-overload repetition quantity, testosterone, Ultimate Power-Density Mass Workout

Rep-Range Rise for New Muscle Size

Q: In 4X Mass Workout 2.0 you describe the high-rep [TORQ] method, going 30-20-15 in reps with short rests between. Sometimes I can’t get 30. Either I pick a weight that’s a little too heavy or I just fatigue too quickly. What should I do?

A: What you’re trying to do with TORQ—tension overload repetition quantity—is reach the upper area of the optimal hypertrophic tension time—60 to 90 seconds.

Most bodybuilder’s muscles aren’t used to that much fatigue, so they crap out early. (Don’t feel bad; you’ll get better at it as you GROW new muscle.)

[Read more…]

Filed Under: X Files Tagged With: 4x mass workout, bodybuilders, fat burning, fat loss, fatigue, GH, growth hormone, high-reps, hormone trick, hormones, hypertrophic, muscle size, muscle-building, new muscle, rep range, short rests, size stimulation, tension time, tension-overload repetition quantity, time under tention, TORQ, tut

1 Set of 1 Exercise for More Cuts, Veins, and Size

Q: I’ve been using an X-centric set [lift in one second, lower in six] for every muscle and have noticed more cuts, veins, and I’m pretty sure more muscle size. I usually use it on the last set of a 4X sequence, but I’ve heard it’s better on the first set to get more of a warmup. Which is better, the X-centric set on the first or last set of 4X?

A: In a previous newsletter, we outlined how to use an X-centric set on the last set of a 4X sequence with The Ultimate Fat-to-Muscle Workout. We showed a lat routine with 4X on the first exercise.

[Read more…]

Filed Under: X Files Tagged With: 1 set of 1 exercise, 3x, 4X, anabolic, anabolic hormones, anabolic reset, capilarization, cardio myths, diet tips, dr. michael mosley, fat burning, fat-to-muscle workout, fatigue, growth hormone, intensity, metabolic adaptions, microtrauma, more cuts, more size, more veins, muscle fibers, muscle growth, muscle size, myofibrillar expansion, physique, sarcoplasm, sarcoplasmic expansion, tension time, testosterone, triceps workout, ultimate fat-to-muscle workout, vascular, vascularity, x-centric

Time-Saving Mass Tactic: 4X Supersets

Big arm measurement - Time-Saving Mass Tactic: 4X Supersets

Q: I love the 4X Workout method. It’s opened my eyes to a new way to build mass. I notice that you guys often superset opposing muscles with 4X, like forearm extensors (top) and flexors (underside), going back and forth. Can I do that with other opposing muscle groups, like biceps and triceps to save time and get a bigger pump?

A: We addressed that question in the Q&A section of the 4X Mass Workout e-book. The answer is, opposing-muscle-group supersets work great with the 4X method—as long as the exercises don’t force you to stop your sets from cardiovascular failure as opposed to muscular exhaustion… [Read more…]

Filed Under: X Files Tagged With: 4X, 4x mass method, 4x mass workout, 4x method, 4x supersets, build mass, build muscle, failure, fatigue, iron guru, muscular exhaustion, opposing muscle groups, oxygen debt, pump, quick tip, supersets, ultimate mass tactics, Ultimate Mass Workout, vince gironda

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