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Less Intensity = More Muscle Immensity?

Jonathan spotting Steve for hammer curls

Doug Brignole and I were discussing training sets to failure and the body’s response to that.

The common belief is that training a set until you can’t get another rep activates the most fast-twitch fibers possible. [Read more…]

Filed Under: X Files Tagged With: Chris Beardsley, fast-twitch fibers, intensity, intermediate, size principle of muscle fiber recruitment, slow-twitch fibers

Muscle Mass and The Size Principle

Vince Gironda, lean and vascular

If you want to pack on the most mass with efficiency of effort, the Size Principle of Muscle Fiber Recruitment is key…

The principle says that [Read more…]

Filed Under: X Files Tagged With: 4x density training, density training, efficiency of effort, fast-twitch fibers, hypertrophy, muscle mass, size principle, size principle of muscle fiber recruitment, slow-twitch exhaustion, slow-twitch fibers, STX, vince gironda

Light Weights, More Mass: New Research

Steve doing hammer curls

For the past two years, I’ve been training with lighter weights, usually starting each exercise for a muscle with a set of 20-plus reps.

That fatigues the slow-twitch fibers. After a short 20-second rest, I use the same weight and crank out another 10 to 12, which quickly shifts the muscle to fast-twitch-fiber activation… [Read more…]

Filed Under: X Files Tagged With: Brad Schoenfeld, dumbbell workout, European Journal of Sports Science, fast-twitch fibers, fiber activation, high-rep sets, hypertrophy, light weights, low-rep sets, more mass, physique, powerblock, research, slow-twitch fibers

New Muscle Size With a Power-Density Jolt

Jonathan Lawson doing cable curls

Q: Just read The Ultimate Power-Density Mass Workout. Absolutely great! I read it all in one sitting. It really made me think, so I’m redesigning my workout using your programs. But don’t higher-rep warmup sets cover the endurance component of the 2A fibers? And what about X Reps? They extend a set, so I would think they also affect the endurance side of the important 2As as well.

A: You’re right on both counts—to a degree. Warm-up sets aren’t intense, so very few fibers are involved—and many that are fall into the slow-twitch category, rather than the important fast-twitch 2As. [Read more…]

Filed Under: X Files Tagged With: 2a fibers, density, endurance fibers, fast-twitch fibers, hardgainers, muscle pump, muscle size, muscular failure, Power, power-density, time under tension

Specialize for Size with Power-Density

Jonathan doing dumbbell presses with Steve spotting

Q: I’m making my best gains ever with the Power-Density Mass Workout. I’m already up six pounds in four weeks, and I see new muscle somewhere every workout, training just about 40 minutes a session. I have a question about my lagging bodypart, shoulders. Can I add sets to the listed workout, or how should I force my shoulders to grow like my other bodyparts?

A: Most of the bodypart routines in the Basic Power-Density Mass Workout consist of only one Ultimate Exercise per muscle group. That makes for quick, simple workouts: First you pyramid the weight over three sets for max force, or Power; then you reduce the weight and attack tension, or Density with a 10×10-style sequence, but using only four sets… [Read more…]

Filed Under: X Files Tagged With: capillary bed expansion, density, endurance, fast-twitch fibers, lagging muscle, muscular force, Power, power pyramids, power-density, pre-ex, pre-exhaustion, shoulder specialization, shoulders, specialization, specialize, ultimate exercise, vascularity

Moment of Bodybuilding Zen 68: Danny Padilla Onstage

Danny Padilla was “the Giant Killer” of pro bodybuilding back in the ‘80s. At only 5’2”, his symmetrical sculpted mass allowed him to beat bodybuilders who were much taller and larger than he was.

From the pic here, you can see why—no flaws anywhere. [Read more…]

Filed Under: X Files Tagged With: 1980s, 4X, 4x muscle building, aesthetics, after-40 muscle building, bodybuilding zen, danny padilla, density training, fast-twitch fibers, giant killer, hypertrophy, iron guru, master trainer, muscle pump, slow-twitch fibers, symmetry, vince gironda

Stage Sets for More Muscle Mass

Jonathan Lawson incline Smith machine presses with Steve Holman Spotting - What Are Stage Sets? (Hint: They Work!)

We often look back through our ebooks for motivation and to find mass-boosting techniques we haven’t used in a while. We recently reminded ourselves about Stage Sets from our second e-book, Beyond X-Rep Muscle Building, which also discusses the X-Fade technique, Double-X Overload and X/Pause. When we first used Stage Sets and other X-hybrid techniques within the program outlined in that e-book, we each gained 10 pounds on top of our previous year’s great gains. Definitely something to add back into the mix once in a while when you have a training partner… [Read more…]

Filed Under: X Files Tagged With: 2a fibers, anabolic fasting, beyond x-rep muscle building, brad pilon, eat stop eat, fast-twitch fibers, get ripped, mass tactics, mass-boosting, more muscle mass, motivation, muscle mass, stage sets, X Reps, X-Fade, x-hybrid techniques

Interval Cardio to Burn More Fat

Q: I’ve heard it brought up a few times by others recently, and I remember from your old daily training blog that you guys sometimes use interval cardio to burn more fat. What is that and how should I use it?

A: There are surprising facts about using interval cardio to burn more fat, but before we get to those, let’s explain interval cardio on a running track. To do interval training, you sprint the straightaways all out and walk the curves. Another good example is running stairs—you run up for intensity and coast down. In other words, you alternate high-intensity bursts with lower-intensity activity.
[Read more…]

Filed Under: X Files Tagged With: aerobic, anaerobic, biotrust protein, burn fat, fast-twitch, fast-twitch fibers, fat burning, fat loss, free protein, free supplements, intensity, interval cardio, interval training, triple-shred, weight loss, x-treme lean

New Home-Grown Mass: Slo-Mo vs. High Reps

Steve Holman dumbbell curls - Finisher Sets: Which Way is Better?

Q: Your Quick Start Muscle 2.0 has renewed my motivation for home training. I’m stoked and starting the STX workouts next week. You have the first set in both workouts for slow-twitch exhaustion. Do you think that first set is better as a slow-mo set or as a normal speed high-rep set?

A: Either of those methods on the first set accomplishes the same thing: You fatigue the slow-twitch fibers, triggering more fast-twitch-fiber activation on the set or sets that follow… [Read more…]

Filed Under: X Files Tagged With: anabolic fasting, anabolic hormones, brad pilon, eat stop eat, fast-twitch fibers, fiber activation, get ripped, home gym, home training, intermittent fasting, motivation, quick-start muscle building 2.0, slow-mo, slow-twitch exhaustion, stx workout

Our At-Home Mass Workouts (what we’re doing)

Steve doing incline curls

Back in the 1990s, Steve’s very first book was titled Iron Man’s Home Gym Handbook. Looks like we’ve come full-circle. At the moment, there’s no place like home—or nowhere else to train but home…

Like most iron men and women, we’re at home with limited equipment. Luckily, our decades of bodybuilding experience have resulted in multiple mass-training tactics and moves to keep gains coming. Here’s Steve’s report on what he’s doing in his bare-bones pump-atorium.  [Read more…]

Filed Under: X Files Tagged With: alain gonzales, at-home workout, athletic-aesthetic physique, brad pitt, Brad Schoenfeld, fast-twitch fibers, growth fibers, heavy training, home gym, Home Gym Handbook, home gym workout, hypertrophy, iron man magazine, jose antonio, light training, mass tactics, muscle hypertrophy, perfect physique, powerblock, pre-exhausting, quick-start muscle building, quick-start muscle building 2.0, slow-twitch fibers, training at home, type-1 fibers, type-2 fibers

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