When you do a set with double-digit reps, like 12 to 15, lactate can pool in the muscles and you feel a burn…

Lactate is a fuel source that helps muscles continue to fire. It was previously believed that the immediate energy was its only function; however…

Research shows that it can help remodel your metabolism, making it more efficient as well as improving your hormone profile…

Those are great things, if you’re into building muscle and getting lean…

But if you’re getting up there in years, a.k.a. geezer—or even if you’re not—there’s another big benefit: brain health.

In a recent study, mice that were subjected to high-intensity interval training that produced lactate significantly increased brain cells responsible for memory and learning—neurogenesis. (Lambertus, et al. J Physiol. Dec 2024.)

So while density-training methods like STX can pack on muscle, the burn you get may also help you remember why you walked into the kitchen.

Train hard—and smart—for BIG results.

Steve Holman
Former Editor in Chief, Iron Man Magazine
X-Rep.com

Pack On Jaw-Dropping Mass Fast With Safe Total-Muscle Training

These two new muscle-building guides are jam-packed with research and insights so you grow like never before, including…

• Mr. America’s TORQ Training: A look at Drug-Free Mr. Universe and biomechanics expert Doug Brignole’s early muscle-tension method—from an interview I conducted in 2005
• Supercompensation Research for Next-Level Muscle Growth: Over 20 email excerpts between Doug and myself (with progress photos) as our workouts evolved over the two years before his death (we learned—and grew—a lot from the latest science, and you will too)
• Less Volume, More Muscle: The precise amount of training to keep you gaining BIG (is 1 set enough?)
• Size Surge With Less Fatigue: Your secret weapon to tame muscle fatigue and harness high-octane hypertrophy
• The New Never-Stop-Growing Workout: Merges the STX and SSS methods (includes printable full-page photo representation of each 35-minute mass workout)
• Rotation for Recuperation: A forgotten 3-day training tactic developed and used by champion ‘70s bodybuilder Frank Calta—with a Mike Mentzer connection

PLUS: You get The Ultimate Mass Workout Reloaded absolutely FREE with NSG. Includes the Stealth Surge Method, specialize for new size; how to ignite new “grow power” with Dr. Selye’s GAS strategy; and the innovative New Wave Full-Body Mass Workout (40 minutes 3 days a week to reload your physique—readers are saying this workout is worth the entire price).

You’ll never stop growing with these in your muscle-building library. Get yours for only $19 (a $29 value, money-back guarantee).