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Performance · Supplement stacks

The Performance Stack Guide — Research-Backed Strength, Recovery & Endurance Support

Jonathan Meagher · 29 June 2026 · 11 min read

This page is educational. It describes what published research has measured. It is not medical advice and does not replace consultation with a qualified healthcare professional.

Four Research-Standard Ingredients for Strength, Recovery & Endurance

Most pre-workouts load up on caffeine, add underdosed amounts of the things that actually work, and call it performance support. The Performance Stack takes the opposite approach: zero caffeine, zero proprietary blends, four ingredients at the doses used in clinical research.

The result is actual performance improvement — not a stimulant feeling, but measurable strength gains, faster recovery, better endurance capacity, and structural support that accumulates over weeks of training.


What's in the Performance Stack

Creatine Monohydrate

5g

Strength & power output — 8.3% average strength gain over 12 weeks

Magnesium Glycinate

400mg

Muscle recovery, neural function & sleep quality

Omega-3

EPA 180mg + DHA 120mg

Cardiovascular endurance & exercise inflammation

Vitamin D3

2,000 IU

Bone health, immune function & testosterone support


Why These Four for Athletic Performance?

Athletic performance breaks down into four demands: strength and power output, recovery between sessions, cardiovascular endurance, and structural integrity (bones and connective tissue). The stack addresses all four:

Performance demandIngredientMechanism
Strength & powerCreatine monohydrateIncreases phosphocreatine stores → more ATP during high-intensity effort
RecoveryMagnesium glycinateSupports muscle relaxation, reduces exercise inflammation, improves sleep
EnduranceOmega-3Reduces inflammation, improves blood flow to working muscles
Structural integrityVitamin D3Supports bone mineral density and immune function during heavy training

The athlete's synergy

Creatine + Magnesium: Creatine powers muscle contraction. Magnesium powers muscle relaxation and recovery. Both are required for the complete contraction-relaxation cycle that drives strength adaptation.

Omega-3 + Vitamin D3: Omega-3 reduces exercise-induced inflammation. D3 supports bone density and immune function — both under pressure during intense training blocks.


The Research: 400+ Studies on Athletic Performance

Creatine monohydrate — 500+ studies

Creatine is the most researched supplement in sports science. The finding is consistent across 500+ trials: 5g daily increases phosphocreatine stores in muscle, supporting higher ATP resynthesis during repeated high-intensity efforts. This translates to an average 8.3% strength increase over 12 weeks with resistance training. Cognitive benefits are also documented — the brain uses creatine for ATP as well. Safety is established over 20+ years of athlete use.

Magnesium glycinate — 100+ studies in athletes

Athletes lose magnesium through sweat and have higher baseline requirements than sedentary individuals. Research shows magnesium supplementation improves muscle recovery, reduces soreness, and supports sleep quality — the period during which most muscle repair happens. The glycinate form is preferred for its superior absorption and tolerability at the 400mg research dose.

Omega-3 — 200+ studies in athletes

Omega-3 supports cardiovascular function (better VO2max ceiling), improves blood flow to working muscles during exercise, and reduces the inflammatory response to training — accelerating recovery and reducing soreness between sessions.

Vitamin D3 — 100+ studies in athletes

Vitamin D deficiency impairs muscle function, immune response, and bone remodelling — all relevant during training. Research shows adequate D3 supports bone density (stress fracture prevention), immune function (athletes are immunosuppressed during heavy training blocks), and natural testosterone regulation.


The Training Timeline

Critical: Creatine requires a training stimulus. Without consistent resistance training, you won't see strength gains from creatine alone. The stack shines when paired with structured training.

Performance Stack vs Energy Drinks & Pre-Workouts

Energy drinksCommercial pre-workoutPerformance Stack
MechanismCaffeine spikeCaffeine + partial activesResearch-standard actives, no caffeine
Creatine doseNoneOften 1–2g (need 5g)5g
Recovery supportNoneMinimalMagnesium 400mg
Crash afterYesOftenNo
Actual strength gainNoModest8.3% over 12 weeks

The Performance Stack is caffeine-free by design — add your own coffee or tea if you want pre-workout stimulation. You get the research-backed benefits without dependency on a stimulant that disrupts sleep if taken too late.


Daily Protocol

Pre or post training (with carbs): Creatine 5g — absorption is enhanced by insulin, so taking it with carbohydrates (in a training meal or shake) is optimal.

With a meal: Omega-3 (fat-soluble — takes with food), Vitamin D3 (fat-soluble — same reason). Breakfast or the meal surrounding training works well.

30–60 minutes before bed: Magnesium Glycinate — supports sleep quality and overnight muscle recovery.

All four can be taken together with a meal if you prefer simplicity. The split timing is optimised, not mandatory.


Frequently Asked Questions

Can I take this with caffeine?

Yes. The stack is caffeine-free — add coffee or tea as needed for pre-workout stimulation. No conflicts with any of the four ingredients.

How much stronger will I get?

The average creatine response in trials is 8.3% strength increase over 12 weeks with consistent resistance training. Some people see more, some less — individual response varies. Without training, you won't see strength gains.

Can I take this if I don't lift weights?

Creatine's strength benefits require resistance training. Endurance athletes (runners, cyclists) still benefit from omega-3 for cardiovascular function, magnesium for recovery, and D3 for bone health — but creatine's power output effect is most relevant to strength training.

Does this interfere with fat loss?

No. Creatine causes intramuscular water retention (inside the muscle cell) which can add 1–2kg on the scale, but this is muscle hydration, not fat. Fat loss requires a calorie deficit — the stack doesn't prevent it.

Can women take the Performance Stack?

Yes. Creatine produces similar relative strength gains in women as in men. No hormonal effects. All four ingredients benefit female athletes equally.

Should I cycle it?

No. Evidence doesn't support cycling creatine or the other stack ingredients. Year-round consistent use is the standard approach — and what the research uses.

What if I miss a day?

Missing a single day doesn't reset creatine saturation. It builds up over weeks. One missed dose has no meaningful effect on results.

Can I take this with my existing pre-workout?

Yes, but check for overlap. If your pre-workout already contains creatine, count that toward your 5g daily total. Watch total caffeine if your pre-workout is stimulant-heavy.


The Bottom Line

The Performance Stack combines four research-backed ingredients at research-standard doses for athletic performance — 8.3% average strength gains from creatine, recovery support from magnesium, cardiovascular and anti-inflammatory support from omega-3, and structural and immune support from vitamin D3. 400+ combined clinical studies back these ingredients.

Unlike stimulant-driven pre-workouts that produce a temporary energy feeling, this stack drives actual performance improvements through mechanisms that accumulate with training. Pair it with consistent training, adequate protein, and enough sleep — and give it 4–8 weeks.

Note: This article describes what published research has measured. It is not medical advice. Consult a healthcare professional if you have any medical conditions or take regular medication before starting this stack.


Related reading

Proco Performance Stack

Four ingredients. Research doses. Zero caffeine.

Creatine 5g · Magnesium Glycinate 400mg · Omega-3 300mg · Vitamin D3 2,000 IU

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