• X Shop
  • Checkout

X-REP.COM

Dedicated to Your Physical Transformation

  • Home
  • About Us
  • X Shop
  • X Files
    • Latest Articles
    • FAQ
    • Ezine Archive
  • Testimonials
  • Contact Us
  • Gallery
  • Subscribe

Mr. America Doug Brignole’s Training, Part 9

Doug Brignole performing the lat pull-in exercise

Researcher Chris Beardsley contends that short rests between sets can blunt the central nervous system…

In other words, you can’t reach as many high-threshold motor units on the next set or sets after only a rest of 1 minute vs. 3 minutes… [Read more…]

Filed Under: X Files Tagged With: Chris Beardsley, Doug Brignole, nervous system, STX, stx method

More Muscle Girth With This…

Upper arm muscle fiber illustration

Q: I’m growing again with STX. But I was thinking that instead of 15 to 20 reps on set #1, how about getting to the fast-twitch fibers faster with a heavier 8-rep set instead? Then lighten the weight and do a Speed Set for even more fast-twitch stimulation.

A: The higher-rep initial set is more efficient, safer and better for hypertrophy—especially for older trainees—for a few reasons… [Read more…]

Filed Under: X Files Tagged With: high reps, higher-rep training, light weights, size principle of muscle fiber recruitment, STX, stx method

Moment of Bodybuilding Zen 260: Mike Mentzer’s Mass On the Beach

Mike Mentzer in one of his classic poses with hand over head

[Read more…]

Filed Under: X Files Tagged With: bodybuilding zen, heavy duty, mentzer, Mentzer brothers, mike mentzer, ray mentzer, stx method

If Young, How Would You Train for Mass?

Steve posing in his backyard, October of 2023

Q: You’ve said that the way you train now is because you’re older. I totally agree: limit the risk and build/maintain muscle without devoting tons of time to your workouts. With your experience and what you’ve learned, would you still train like you do now if you were in your 20s or 30s?

A: Yes and no. I would probably use my current limited-volume STX workout for each muscle once a week; BUT… [Read more…]

Filed Under: X Files Tagged With: mass building, muscle building, stx method, stx workout, train to gain

Mass Mantra #71

Paul Carter: Gym portrait and doing cable curls

Trainer and biomechanics expert Paul Carter was mentioned and pictured in a recent newsletter. Here’s another shot of him. [Read more…]

Filed Under: X Files Tagged With: failure, mass mantra, Paul Carter, STX, stx method

How to Flip the Fast-Twitch Switch to Pack on Mass

Illustration of lat muscle fibers

Last week’s newsletter on fiber-type activation during a set was thought-provoking. If you missed that…

Slow-twitch fibers generate ATP for power via aerobic metabolism—with oxygen (illustration by Larry Eklund)… [Read more…]

Filed Under: X Files Tagged With: aerobic, fast-twitch, fast-twitch fibers, muscle fibers, stx method

High-Rep Pain to Gain Muscle?

Four pics of Jonathan to illustrate 4X

Q: I understand the benefit of the high-rep-set-first STX method. But for me the pain is unbearable when I get past 12 reps. Will 12 work to exhaust the slow-twitch fibers so that fast ones are better initiated on the second [lower-rep] set?

A: I feel your pain. It does hurt—and some trainees have a lower tolerance than others… [Read more…]

Filed Under: X Files Tagged With: fast-twitch fibers, high reps, slow-twitch fibers, stx method

Moment of Bodybuilding Zen 196: Danny Padilla’s Double-Biceps Perfection

Danny Padilla in a most muscular pose

Even at only 5’2”, Danny Padilla was still one of the greatest bodybuilders of the Golden Era. Here he is, looking like the perfect Tesla hood ornament. Elon? [Read more…]

Filed Under: X Files Tagged With: biceps, big arms, bodybuilding zen, danny padilla, perfection, STX, stx method

Moment of Bodybuilding Zen 161: Arnold’s Superman Pose

Arnold doing a Superman pose with a woman behind him

Not many people know this, but women used to pay Arnold to sit behind him and watch him rhythmically flex his buttocks. [Read more…]

Filed Under: X Files Tagged With: aesthetic, arnold, arnold schwarzenegger, bodybuilding zen, fast-twitch, john balik, STX, stx method

Moment of Bodybuilding Zen 159: Danny Padilla’s Quad Flex

Danny Padilla in the gym flexing his leg

Here’s a shot of Danny Padilla doing the River Dance, an Irish jig believed to be the secret to massive leprechaun legs. [Read more…]

Filed Under: X Files Tagged With: bodybuilding zen, brazilian study, danny padilla, giant killer, growth threshold, progressive muscle-fiber exhaustion, STX, stx method, vince gironda

  • 1
  • 2
  • 3
  • Next Page »

:: Get the latest news and specials :: Sign Up for our Ezine!

Shopping Cart

Number of items in cart: 0

  • Your cart is empty.
  • Total: $0.00
  • Checkout

Log In

Copyright © 2026 · X-Rep.com