You ready? Because this one’s for you my fellow disciples of the way. For too long, zealots disguised as labcoat-wearing scientists called us heretics. They deemed our methods as “broscience” without any supportive evidence. They basically saw disciples of the PUMP the way relatively sane individuals see flat earthers.
But the benefits of the pump in regards to hypertrophy are not the same as believing the earth is flat.
For multiple reasons, of course, but most specifically, our claims are…you know… hold actual merit. In particular, the PUMP has proven itself a tool worthy of using for those seeking muscle growth.
The Process of Metabolic Stress
As touched on earlier, the traditional thought is that when we lift weights, hypertrophy occurs through increases in muscle fiber size with an increase in myofibrillar proteins. And when this happens, there’s an expansion in muscle fiber cross sectional area, due to the predominantly increased myosin and actin. This process occurs similarly in both of the previously mentioned training methods (mechanical tension, muscle damage).
However, the way hypertrophy occurs during metabolic stress training is quite different.
When we perform sets of barbell curls, for example, blood gets pumped into the muscles by the arteries, and those steady muscular contractions prevent the veins from letting blood escape, resulting in high levels of metabolic stress and cell swelling—aka the pump.
What happens as a result of this cell swelling?
Things get complicated, that’s what. Kidding. Kind of. There are some things science has come to a conclusion on, but there’s still more research needed. That being said, we do know that hypertrophy occurs…
Data from recent studies suggest that short-term high volume resistance training can accomplish a number of feats. For one, in spite of reducing muscle fiber actin and myosin protein concentrations, metabolic stress training increases muscle fCSA (fiber cross sectional area). Additionally, the high volume triggers a sacroplasmic expansion with an up-regulation of sarcoplasmic proteins. And these effects can persist up to eight days following.
This type of hypertrophy is called sarcoplasmic hypertrophy, which has been defined as “…an increase in the volume of the sarcolemma and/or sarcoplasm accompanied by an increase in the volume of mitochondria, sarcoplasmic reticulum, t-tubules, and/or sarcoplasmic enzyme or substrate content.” – [Haunt et al., 2019]
In other words, sarcoplasmic hypertrophy increases muscle size without adding myofibrillar proteins like actin and myosin (both of which get increased during our other two muscle growth methods).
So, to sum that up, yes. Metabolic stress training does deserve a place in your workout routine. It’s a hell of a lot of fun. It’s challenging. Bodybuilders since time memoriam have proven it can provide serious benefits (we’ll be using one such bodybuilder as an example in the application section).
The only thing that might cause some individuals skepticism is that long-term sarcoplasmic hypertrophy isn’t quite as clinically studied as its counterparts, so you just might wanna keep that in mind.
Applying Metabolic Stress Methodology for Sarcoplasmic Hypertrophy
The key is to keep constant tension on the muscles by maintaining a continuous cadence (no rest between reps) and reversing direction just short of lockout or just before bottoming out, depending on the exercise’s strength curve.
This also includes less rest taken between sets. For this one, I’ll pull a routine from arguably one of the most aesthetic bodybuilders of all time (inarguably, the most aesthetic bodybuilder without an Olympia title). I’m talking, of course, about the high-volume king, Serge Nubret.
He routinely trained a muscle group two times a week. To make sure you’re getting the full picture of his exercise selection and what not, here are both Chest-Quad sessions (yeah, you read that right. He trained chest and quads on the same day).
Monday: Chest & Quads (rest time between sets is 20-30 seconds)
Exercise |
Sets + Reps |
Bench Press |
8 x 12-20 |
Flat Bench Flyes |
6 x 12-20 |
Dumbbell Pullovers |
6 x 12-20 |
Squats |
8 x 12-20 |
Leg Extensions |
6 x 12-20 |
Thursday: Chest & Quads (rest time between sets is 20-30 seconds)
Exercise |
Sets + Reps |
Incline Bench Press |
8 x 12-20 |
Incline Flyes |
6 x 12-20 |
Dumbbell Pullovers |
6 x 12-20 |
Leg Press |
8 x 12-20 |
Leg Extensions |
6 x 12-20 |
Although this is the most commonly known set and rep scheme Serge used, there are also reports of him doing as many as twenty sets for one exercise. Which is obviously bats*** insane. In light of his brilliant insanity, I’d advise you to keep two things in mind:
- Serge Nubret didn’t just jump right from doing three sets to twenty; instead, he worked his way up to that amount of volume—i.e. progressive overload.
- He was also a freak—beyond the confines—of nature.
Top Three Supplements to Enhance Metabolic Stress Benefits
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- WOKE AF — Bucked Up Non Stim Combo: you might not know this, but caffeine can actually constrict blood vessels, thereby making it harder to achieve an optimal pump. That being said, numerous studies suggest caffeine can help you perform more repetitions on a given exercise. I’ve devised what I believe to be the perfect compromise.
- WOKE AF (half-scoop): Because WOKE AF has 333mg of caffeine, we can cut the scoop down in half and still get 166.5mg of caffeine running through our system. Additionally, because WOKE AF delivers two bonus high-powered stimulants in Dendrobium and Synephrine, we can shed that other 166.5mg without seeing any significant drop offs in performable reps.
- Bucked Up Non-Stim (½-1 scoop): Obviously there’s more to a pre-workout than just the stimulants. You have the ingredients like beta-alanine and actigin® for increased performance and muscle endurance, along with citrulline malate and astragin® for enhanced blood flow (needed for maximal metabolic stress).* By adding in a half (or full) scoop of the caffeine-free Bucked Up, we save ourselves the misery of missing out on all the muscle growth potentiates found within pre-workout.
- PUMP-OCALYPSE: Three ingredients for blood flow and two ingredients for maximal cellular hydration to super-swell cells for sarcoplasmic gainz. Bonus ingredients to maximize benefits in muscle damage and mechanical tension.*
- All Bulk No Bloat: I don’t want to be overzealous (is there really any other type of zealotry?) but All Bulk No Bloat gets a nod in all three sections— for maximizing hypertrophy mechanisms—for a reason. Think of your supplement stack as MCU’s Infinity Gauntlet. In terms of muscle growth, All Bulk No Bloat thrums with the power to defy space and time. Forge your Hypertrophy Gauntlet accordingly here.