What Are Amino Acids and Why Are They Important?
Learn what amino acids are and how BCAAs, EAAs, and glutamine support muscle recovery, performance, and overall health.
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NutraBio LEG DAY is a fully loaded, stimulant-free intra-workout formula designed to support lean muscle growth, strength, endurance, and hydration during your most demanding training sessions. Built on the foundation of NutraBio’s top-selling Intra Blast, LEG DAY takes performance to the next level with a complete essential amino acid profile, fast-digesting carbohydrates, and key electrolytes.
Whether you're pushing heavy weight, increasing volume, or grinding through intense sessions, LEG DAY is engineered to help fuel performance, support recovery, and keep you going from start to finish—without stimulants so you can stack it with your favorite pre-workout.
Designed for high-intensity training, LEG DAY provides comprehensive intra-workout support to help you push through demanding workouts, maintain performance, and support muscle recovery. It’s built for athletes who want more than basic hydration—delivering targeted nutrients to support strength, endurance, and muscle preservation.
LEG DAY delivers a full spectrum of essential amino acids, including BCAAs in the scientifically supported 2:1:1 ratio, to help support muscle protein synthesis and recovery. Providing all nine essential amino acids ensures your body has the building blocks it needs to repair and rebuild muscle tissue after intense training.
This clinically dosed amino acid matrix helps promote lean muscle growth, reduce muscle breakdown, and support recovery while minimizing post-workout soreness.
The advanced performance matrix is designed to support strength output, endurance, and overall training capacity. LEG DAY helps fuel demanding workouts by supporting energy production, promoting nitric oxide levels, and assisting in nutrient delivery to working muscles.
This formula may also support both anabolic (muscle-building) and anti-catabolic (muscle-preserving) processes to help you train harder and recover more efficiently.
Proper hydration is critical for performance, and LEG DAY includes key electrolytes to help replenish what is lost during training. Maintaining hydration supports muscle function, endurance, and nutrient transport, helping reduce fatigue and improve overall workout performance.
Adequate hydration also plays a role in muscle fullness and performance, supporting optimal training output and recovery.
Mix 1 scoop with 12–16 oz of cold water and sip throughout your workout. LEG DAY can also be used before training, between meals, or post-workout to help increase daily amino acid intake.
Note: Always review the product label for the most accurate ingredient and nutrition information.
Important: Always read and follow label directions before use. Consult a qualified healthcare professional prior to using this product if you are pregnant, nursing, have a medical condition, or are taking medication. Discontinue use if adverse reactions occur.