Nutra Bio | Intra Fuel Leg Day

Flavor: Cherry Limeade
Sale price$59.99
In stock


Prepare yourself for total destruction… It’s LEG DAY.

  • Enhance Lean Muscle Tissue Growth
  • Complete Essential Amino Acid Profile
  • Maximize Strength and Workout Performance
  • Elevate Muscle Endurance and Energy Production
  • Advance Hydration Optimization
  • Stimulant-Free Formula



LEG DAY isn’t formulated to move some weight. It is formulated to help you move some HEAVY ASS WEIGHT.

We’re talking the kind where the bar is bending. The kind where everyone around you stops to watch in amazement. It’s at that moment where those who are about to witness greatness respect the drive and heart you have. It’s where respect is earned by both those around you as well as the weights.

You’re not here to play. Those weights would break mere mortals – BUT NOT YOU. Not today. Not ever. NutraBio LEG DAY has just raised the bar… so you can too.



LEG DAY is a special edition of our top-selling intra-workout supplement, Intra Blast. LEG DAY takes Intra Blast to new heights and beefs it up to further improve your workout performance for those killer workouts where you leave everything in the gym. Those workouts where you question if you even want to attempt walking out to your car. In those workouts, you don’t want to hit the wall, you don’t want to throw in the towel, you want to annihilate your muscles and force new growth. NutraBio LEG DAY can help you do just that.

Best of all, LEG DAY is stimulant-free, allowing you to stack LEG DAY with your favorite pre-workout to maximize your results.


When looking at muscle growth and recovery, the main contributor comes in the form of amino acids. In order for broken-down muscle fibers to properly rebuild and repair, amino acids need to be present. NutraBio LEG DAY not only provides your muscles with the highest quality BCAAs in the scientifically studied 2:1:1 ratio, but it also includes ALL of the essential amino acids (EAAs).

Research has shown that muscle growth and recovery are more significant when all nine essential amino acids are present versus what many profiles out there utilize, which are just the three BCAAs.

NutraBio LEG DAY utilizes a clinically dosed formula, which includes HPLC-quality amino acids and BCAAs that are naturally fermented. This high-powered amino acid matrix helps promote and preserve lean muscle tissue, aids in recovery, reduces muscular fatigue during training, and minimizes post-training soreness (delayed-onset muscle soreness or DOMS).


The strength and performance matrix found in NutraBio LEG DAY consists of ingredients that, when combined, help provide you with unrivaled strength and performance. Let’s face it, grueling workouts demand more than a traditional blend of ingredients, you need something that works as hard as you do.

LEG DAY can help enhance your training by helping increase power output, elevate performance, metabolize fat, promote protein synthesis and proper recovery, boost nitric oxide production, and protect cells from physiological stresses produced through exercise.

Additionally, LEG DAY may promote both anabolic and anti-catabolic responses in the body to help build and preserve lean muscle tissue.


LEG DAY helps take your hydration to the next level by including key minerals and electrolytes to replenish what was lost during your workout. Proper hydration is essential when it comes to workout performance. As little as a 2% reduction in body water can drastically reduce performance levels and hinder your results.

Every cell in your body needs water. For your muscles to function, water is required to help facilitate the electrical current that creates an impulse the muscle needs to be told to contract and relax. By managing hydration and electrolyte levels, the body is better able to transport key nutrients (such as amino acids) out to the working muscles, which can help reduce fatigue, improve endurance, and enhance recovery.

Something else to consider is that maintaining hydration can help improve protein synthesis, which is essential in building lean muscle mass. Additionally, you need adequate hydration levels to achieve the coveted pump during workouts and push fluid into the muscles. Otherwise, you risk looking flat, and your muscularity can appear drastically reduced.


ClusterDextrin: A high-quality and high-performance patented carbohydrate that has the ability to quickly pass through the stomach without causing any sort of bloating, upset stomach, or nausea. Cluster dextrin can provide you with a boost of sustained energy during your workouts, which can aid in increasing workout performance.

Ribose: Plays a role in energy production, L-Ribose also aids with improving sleep quality and brain function.

Velvet Bean Extract: Can regulate mood as well as the ability to improve brain function and well-being.

elevATP®: This powerful ingredient contains a patented blend of plant bio-inorganic trace minerals and polyphenols to help increase intracellular ATP levels and can improve strength, power, and performance.

NeuroFactor®: This is an all-natural, patented extract that contains a unique profile of polyphenols that have been shown to impact learning, memory, and higher thinking, which may help athletes stay “locked in” for longer during intense training sessions

Senactiv®: A 100% natural ingredient containing a unique blend of panax notoginseng and rosa roxburghii that is backed by research and shown to enhance muscle energy, produce more ATP, and may support muscle preservation and regeneration.

L-Leucine: An essential amino acid used to boost protein synthesis and help increase ATP to be used as energy.

L-Isoleucine: A branched-chain amino acid (BCAA) that plays a role in protein metabolism, muscle growth, immunity, glucose transportation, and fatty acid metabolism.

L-Valine: This powerful amino acid can help improve muscle recovery and repair while also supporting enhanced endurance.

L-Ornithine HCl: An amino acid that is naturally produced by the body and supports ammonia buffering, which may help delay the onset of fatigue, increase anaerobic performance, and promote faster recovery.

L-Lysine HCl: An essential amino acid that research has shown can provide an increase in strength, performance, and muscle recovery.

L-Threonine: This amino acid plays a role in supporting muscle contractions, can boost protein synthesis, and aids in repairing muscle tissue.

L-Histidine HCl: An amino acid that contributes to muscle growth, aids in muscle tissue repair, helps make blood cells, and can protect nerve cells.

DL-Phenylalanine: This ingredient can help reduce perceived pain, which can allow you to push harder during workouts by delaying muscle fatigue.

DL-Methionine: Used to help enhance athletic performance and can support muscle growth by helping increase the diameter of muscle fibers.

L-Tryptophan: An amino acid that can help improve mood and relaxation but also supports the ability to enhance muscle growth and aid in fat-burning.

Taurine: Research has shown that this amino acid can help increase strength, reduce muscle fatigue, heighten concentration, and supports hydration.

Calcium Potassium Phosphate (Calci-K): A patented ingredient that combines calcium, potassium, and phosphorus into one easily absorbed complex. Calci-K plays a role in proper hydration and can also optimize muscle contraction.

CocoPure: A patented coconut water powder that can help optimize performance and promote hydration through its powerful electrolytes and added vitamins and minerals.

Himalayan Pink Sea Salt: Commonly used to improve hydration by replacing key minerals and electrolytes lost during intense training sessions.

Di-Magnesium Malate (Albion): A patented combination of ingredients to help boost energy, improve mood, support nerve and muscle function, and enhance performance.

Sodium Phosphate: Plays a role in reducing muscle cramps, minimizes muscle pain, improves muscle acidity, and can increase the amount of oxygen available for the muscles during workouts.

Astragin: A novel ingredient shown to increase the bioavailability and absorption of several key nutrients, including the uptake of numerous amino acids. AstraGin may also support better muscle recovery and growth following training by activating mTOR.

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