Creatine’s primary role is helping supply energy to your muscles so they can perform, recover, and adapt. But fueling the work is only one part of the muscle-building equation. Your body also relies on biological signals to repair and rebuild muscle after that work is done.
That’s the gap Stack & Sculpt was formulated to address: 5g of creatine monohydrate paired with 2.4g of clinically studied PeptiStrong® peptides, supporting your muscles from effort through recovery and rebuild so you can feel lean and toned.
To better understand the Advanced Toning Technology™ Stack and Sculpt offers, let’s unpack what each ingredient does, how it works, and why they work so well together.
What Does Creatine Do?
If you take one thing away from this section, it’s that creatine fuels the effort. Every time your muscles contract, your cells use ATP for energy. The catch? Your muscles use ATP rapidly during high-effort movement. Creatine helps address that constraint directly.
Taken consistently, creatine is stored in muscle tissue as phosphocreatine, which acts like a rapid-recharge system. When ATP is depleted during effort, phosphocreatine helps regenerate it so your muscles can continue producing energy.
The practical translation is more available muscle energy when you need it most, like during the last few reps of a strength set, the final seconds of a Pilates hold, or another high-effort movement when your muscles need energy quickly.
The International Society of Sports Nutrition identifies creatine monohydrate as one of the most effective nutritional supplements available for supporting exercise capacity and lean body mass.
While we make creatine naturally and get some through foods like meat and fish, supplementation can further increase the amount stored in muscle, which is one reason creatine monohydrate has become so well studied for exercise performance.
Here’s the gap. Creatine improves the quality of the effort you put in. Yet it doesn’t tell your body what to do with all that extra effort.
What’s Happening to Your Muscles
Before we get to PeptiStrong®, it helps to understand what happens when you first challenge a muscle.
A heavier set, a longer hold, or a class after two weeks off creates stress your muscles have to respond to. Depending on the type and intensity of exercise, that can include mechanical tension, increased energy demand, and some temporary muscle damage.
That challenge tells your body the muscle needs to adapt. Over the next 24 to 72 hours, your body shifts into recovery mode, repairing muscle tissue and activating the processes that rebuild.
This is where much of the result actually happens, not only during the workout, but in what your body does afterward. The workout is the request. The rebuild is the result.
How to Take Creatine
Creatine is one of the most straightforward supplements to work into your routine, but a few basics make it more effective.
Consistency matters more than timing
Creatine works by fully saturating your muscle stores over time, so the biggest factor in results isn’t when you take it, but whether you take it every day. A daily dose of 3-5g is the standard, research-backed amount for maintaining those stores.
You don’t need a loading phase
Some protocols call for a higher “loading” dose in the first week to saturate muscles faster. It’s not required. Taking a consistent daily dose will get you to the same place, just over a slightly longer runway, typically two to four weeks.
Mix it into what you’re already doing
Creatine monohydrate dissolves easily in water, and there’s no strong evidence that taking it before or after a workout, or with food or without, changes its effectiveness. The easiest approach is picking a time you’ll actually remember, like alongside your morning coffee or post-workout shake, and sticking with it.
Stay on top of water intake
Creatine draws water into muscle cells, so it helps to be a little more intentional about hydration while you’re taking it.
Give it time
Because creatine works by building up stores in the muscle, effects tend to show up over weeks, not days. Stick with your daily dose and let it do its job in the background while you train.
How PeptiStrong® Works
PeptiStrong® is a bioactive peptide complex derived from fava bean protein and developed by Nuritas. It was identified through AI-assisted screening and studied for its effects on pathways involved in muscle health.
So, if you take one thing away from this section, it’s that PeptiStrong® is the signal for your body to build lean muscle and tone.
Your muscles are constantly balancing signals that support muscle building and rebuilding with signals that limit muscle growth. PeptiStrong® has been shown to support both sides of that equation.
It supports the building side. In preclinical research, PeptiStrong® increased activity in pathways involved in muscle protein synthesis and increased the expression of protein-synthesis-related genes.
It helps release one of the brakes. In human research using the same 2.4-gram daily dose found in Stack & Sculpt, PeptiStrong® significantly reduced myostatin, a protein that acts as a natural brake on muscle growth.
In human clinical studies, this translates to the following:
- In the 17-day clinical study, PeptiStrong® was associated with a 144% greater muscle strength recovery rate and up to 47% less exercise-induced muscle fatigue 72 hours after intense resistance exercise compared with placebo.1,2
- Longer-term research has also shown benefits alongside training. In an 8-week clinical study, 2.4g of PeptiStrong® daily combined with resistance training led to a 17% greater increase in leg strength than resistance training alone.3
So when you finish a workout, and your body shifts into recovery and repair, PeptiStrong® supports the signals involved in rebuilding and helps translate those signals into meaningful improvements in recovery and strength.
Why It Takes The Two Together
Creatine and PeptiStrong® work through different but complementary parts of the muscle equation.
Think of it as a three-part chain:
Fuel without a signal is a full tank with no directions. And a signal without the effort doesn’t give your muscles the same reason to adapt.
Advanced Toning Technology™ is what we call bringing both together: creatine to fuel the work and PeptiStrong® to help signal what comes next.
1 In a clinical study, PeptiStrong® was associated with a 144% increase in muscle strength recovery rate, 72 hours after intense resistance exercise, compared to placebo, in a healthy male population supplemented with 2.4 g/day for 17 days. Kerr et al. Nutrients. 2023.
2 In a 17-day clinical study, PeptiStrong® (2.4 g/day) reduced exercise-induced muscle fatigue by up to 47% compared to placebo, as measured 72 hours after a bout of intense resistance exercise, in a healthy male population. Kerr et al. Nutrients. 2023.
3 In an 8-week clinical study, PeptiStrong® combined with resistance training led to a 17% greater increase in leg strength than resistance training alone (Day 56, p=0.05) in a mixed-sex population supplemented with 2.4 g/day. Mohan et al. BMJ Nutrition, Prevention & Health. 2025.
