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Restore depleted muscles on rest day with 12 hours of steady anabolic nourishment*

  • Reload muscles with key sport nutrients*
  • Extended-release muscle growth support*
  • Promotes strength, power + endurance*
Upgrade Yourself®with Performance Lab® SPORT Maintain
  • icon-features-allergen-free


  • icon-features-banned-substance-free


  • icon-features-gluten-free


  • icon-features-soy-free


  • Synthetic

  • Caffeine

  • icon-features-non-irradiated


  • icon-features-non-gmo


  • Prebiotic

  • icon-features-nutrigenesis


  • Vegan

  • icon-features-gmp-certified


Upgrade your rest day: Return to action faster, bigger and stronger

Athletes who skip rest day sport nutrition miss a massive anabolic opportunity.

Research shows muscle growth lasts 24-48 hours after exercise, and that sport nutrients can amplify gains when taken every day, including rest day.

SPORT Maintain is an ultramodern rest day reloader + recharger that restores depleted muscle better than anything ever developed.

Take SPORT Maintain to stimulate and nourish anabolic activity for up to 12 hours on rest day. Return to your game bigger, faster and stronger.

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Designed for Performance

  • Restores depleted muscles with crucial sports nutrients on rest day*
  • Supports athletic strength, endurance and maximal muscle power output*
  • Enhances muscle growth and recovery with extended 12-hour nourishment*
  • Primes muscles for stronger athletic performance in your next session*

Healthy for Daily Use

  • Sports nutrition technology from Creapure pH10®, SR Carnosyn®, NutriGenesis®
  • Helps with consistent daily muscle loading required for peak athletic performance*
  • Extended rest day nourishment for healthier muscle repair and growth*
  • Plant-based, prebiotic-infused NutriCaps® from pullulan (fermented tapioca)
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Build Stronger Muscles Faster on Rest Day

Creatine and beta-alanine are top ergogenics that produce the greatest athletic performance enhancements when taken every day, including rest day. This regimen presents challenges:

  • Intense training depletes beta alanine and creatine from muscle tissues
  • Higher daily dosing may be linked to uncomfortable tingling and bloating
  • Stacking, dosing and timing of several supplements is inconvenient
Carnosyn retention

Performance Lab® SPORT Maintain solves these muscle loading challenges on rest day with creatine and beta-alanine innovations – easy to take and stacked to perform.

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Supplement Facts
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Creapure® pH10 Creatine, 3000 mg

Creapure® pH10 Creatine

SPORT Maintain Creapure® pH10 replenishes creatine muscle stores on rest days. Consistent daily supplementation is the best way to unlock creatine’s full ergogenic benefits, including:

  • Raising muscle ATP energy to power growth while recharging muscle for your next session;
  • Stimulating synthesis of proteins, stem cells and growth factor used to build muscle;
  • Modulating the oxidative stress and myostatin that can limit muscle repair and growth

SPORT Maintain maximizes all of these creatine benefits by keeping levels elevated in muscle tissues, supporting growth and repair while charging you up for your next high intensity session.

SPORT Maintain Creapure® pH10 is a quality 99.5% pure form of pH-balanced creatine monohydrate that enhances bioavailability while reducing creatine bloating and gastric distress.

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SR Carnosyn® Beta-Alanine, 1600 mg

SR CarnoSyn® is advanced Beta-Alanine: An overall pre- and post-workout muscle booster that works by raising muscle carnosine.

Consistent muscle carnosine loading is one of the most important sports nutrition practices because it supports both muscle recovery and subsequent muscle performance:

SR CarnoSyn® muscle recovery support

  • Antioxidant activity to neutralize exercise-induced, muscle-damaging free radicals;
  • Inhibits protein-damaging advanced glycation end-products (AGEs);
  • Acts as a muscle-alkalizing pH regulator, buffering impact of muscle-damaging acids

SR CarnoSyn® muscle performance support

  • Increases the working capacity of muscle across all strength and endurance activities;
  • Delays muscle failure by reducing acidosis and boosting muscle buffering capacity;
  • Boosts overall muscle strength and endurance
SR Carnosyn® Beta-Alanine

SPORT Maintain SR CarnoSyn® is innovative sustained-release (SR) Beta-Alanine that gradually raises and maintains muscle carnosine for 12 hours of steady anabolic nourishment on rest day. SR CarnoSyn® remains in the body longer for peak loading and higher dosing without Beta-Alanine tingling discomfort.

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SPORT Maintain + SPORT Pre + SPORT Post is your convenient solution for getting the consistent daily beta alanine and creatine intake shown to produce the best muscle benefits in human research.

Pre, Post, and Maintain

NutriGenesis® Iron, 2.5 mg

The harder you train, the more you need iron: Exercise reduces iron absorption while accelerating iron loss through sweat.

Low iron limits red blood cells’ oxygen transport ability – potentially leading to reduced exercise capacity, fatigue and sub-par overall physical performance.

  • Researchers have suggested that iron supplementation helps improve performance across athletic strength, endurance and maximal muscle power output.

SPORT Maintain NutriGenesis® iron is complexed with a matrix of absorption-enhancing cofactors – making it easy for athletes to restore and sustain ideal iron levels required for peak performance.

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Who should take Performance Lab® SPORT Maintain?

SPORT Maintain is an ideal rest day supplement for anyone seeking the greatest gains from their strength training program.

How do I take Performance Lab® SPORT Maintain?

On rest days, take 3 capsules in the morning and 3 capsules in the afternoon on an empty stomach. Take SPORT Maintain consistently.

For best results, take SPORT Maintain with SPORT Pre and SPORT Post. Designed to stack together, SPORT Maintain + SPORT Pre + SPORT Post is the world’s most convenient solution for getting the consistent daily beta alanine + creatine intake shown to produce the best muscle benefits in human clinical research.

Is Performance Lab® SPORT Maintain safe?

Like other Performance Lab® supplements, SPORT Maintain is designed to be safe for long-term daily use, without the need for cycling. SPORT Maintain achieves this by using pure, potent ingredients that are dosed appropriately and in line with clinical research. SPORT Maintain’s clean formula design – free of GMOs, gluten, soy, colorants, preservatives and other additives – is also well-tolerated by the body, and safe for long-term use. SPORT Maintain avoids the use of caffeine and stimulants, further strengthening its safety and tolerability profile.

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Performance Lab® SPORT Maintain

Ready to upgrade your rest day? Take SPORT Maintain to promote faster recovery and bigger growth during downtime and stronger performance in your next session.

3 Month Supply
+ 1 Box FREE (4 Boxes)


+ FREE shipping and handling

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2 Month Supply (2 Boxes)


+ shipping and handling

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1 Month Supply (1 Box)


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30-Day Performance Promise

Your first order of any Performance Lab® product is covered by our 30-day performance promise.

Put Performance Lab® Maintain to the test for a full 30 days and if you don’t see results, we’ll refund your money. No questions asked.

Simply get in touch with a member of our Customer Care team to arrange the return of the empty bottle, and any unused bottles.

The Performance Lab® Performance Promise covers one box of any of our products, up to a maximum of three products per order.

Price Promise

SPORT Maintain stacks well with…


Maintain + Pre

SPORT Pre is taken 30 minutes before exercise to quickly supercharge muscles with ergogenic nutrition.

SPORT Pre’s performance-enhancing effects are amplified after SPORT Maintain nourishes muscles on rest day.

SPORT Maintain + SPORT Pre both load muscles with CarnoSyn® beta alanine and Creapure® pH10 creatine: Ultramodern forms of sports nutrients shown to produce the best muscle benefits when taken in combination, consistently, over time.

Take SPORT Maintain + SPORT Pre to keep your muscles topped-off with the most research-backed sports nutrients for peak athletic performance and healthy muscle gains.


Maintain + Post

SPORT Post is taken immediately after exercise to restore muscles.

SPORT Maintain picks up where SPORT Post leaves off, steadily nourishing muscle growth over 12 hours on rest day.

Take SPORT Maintain + SPORT Post to raise and sustain ideal muscle levels of SR CarnoSyn® beta alanine and Creapure® pH10 creatine.

SPORT Maintain + SPORT Post feed and restore muscle from the moment you finish your session through rest day.


Maintain + Carb

Carbs increase creatine absorption into muscle. Adding SPORT Carb maximizes SPORT Maintain creatine muscle-loading on rest day, while also fueling muscle for energy-intensive growth and repair.

Take SPORT Maintain + SPORT Carb together to strengthen your support for rest day recharging and ultimate muscle gains.


Maintain + Protein

In combination with SPORT Maintain’s protein synthesis, muscle energy, growth factor and muscle stem cell support, SPORT Protein on rest day helps you get the consistent daily protein intake associated with the best research-backed muscle gains.

Take SPORT Maintain + SPORT Protein to spark and nourish robust muscle growth on rest day.


Maintain + Sleep

Sleep amplifies SPORT Maintain rest day gains by extending your deepest, most regenerative sleep phases.

Together, SPORT Maintain + Sleep maximize the profound athletic benefits of rest day, helping you to return to action stronger, healthier and energized to perform.


The research and studies behind Performance Lab® SPORT Maintain.

Learn More


Decombaz J, et al., 2011. Effect of slow-release beta-alanine tablets on absorption kinetics and paresthesia. Amino Acids, 43(1): 67-76.
Baguet A, et al., 2009. Carnosine loading and washout in human skeletal muscles. J Appl Physiol, 106: 837-842.
Harris RC, et al., 2009. Changes in muscle carnosine of subjects with 4 weeks of supplementation with a controlled release formulation of beta-alanine, and for 6 weeks post. FASEB J., 23:599.4.
Stellingwerff T, et al., 2012. Effect of two beta-alanine dosing protocols on muscle carnosine synthesis and washout. Amino Acids, 42(6): 2461-72.
Stout JR, et al., 2006. Effects of twenty-eight days of beta-alanine and creatine monohydrate supplementation on the physical working capacity at the neuromuscular fatigue threshold. J Strngth & Cond. Rsrch, 20(4): 928-931.
Derave W, et al., 2007. Beta-alanine supplementation augments muscle carnosine content and attenuates fatigue during repeated isokinetic contraction bouts in trained sprinters. J Appl Physiol., 103: 1736-1743.
Baguet A, et al., 2010. Beta-alanine supplementation reduces acidosis but not oxygen uptake response during high-intensity cycling exercise. Eur J Appl Physiol., 108(3): 495-503.
Hoffman J, et al., 2006. Effect of creatine and beta-alanine supplementation on performance and endocrine responses in strength/power athletes. Int J Sport Nutr & Exer Metab., 16: 430-446.
Smith A E, et al., 2009. Effects of beta-alanine supplementation and high level intensity interval training on endurance performance and body composition in men—a double-blind trial. J Int Soc Sports Nutr., 6: 5.
Hill C A, et al., 2007. Influence of beta-alanine supplementation on skeletal muscle carnosine concentrations and high intensity cycling capacity. Amino Acids, 32:225-233.
Van Thienen R, et al., 2009. Beta-alanine improves sprint performance in endurance cycling. Med & Science in Sports & Exerc., 41(4): 898-903.

Creatine + Carb

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* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.