What Are Amino Acids? Understanding EAAs, BCAAs and Functional Amino

Amino acids are vital for our bodies. They act as building blocks of proteins, crucial for many functions. Fitness enthusiasts and athletes often seek amino acid supplements to enhance performance reduce muscle soreness. 

Understanding the different types of aminos 

There are 20 amino acids, each with a different role. Of these, 9 are essential amino acids, which the body cannot produce on its own, so they must come from food or supplements.

Essential Amio Acids (EAAs) 

Essential Amino Acids must be obtained directly through food or supplements, and they support functions like muscle repair, hormone production and immune health. The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine.

Histidine: supports tissue growth, produces histamine and maintains nerve health.

Isoleucine: vital for muscle metabolism, immune function and haemoglobin production.

Leucine: drives muscle protein synthesis and regulates blood sugar.

Lysine: absorbs calcium, builds collagen and produces hormones. 

Methionine: supports tissue growth, metabolism and detoxification.

Phenylalanine: used to make neurotransmitters. 

Threonine: maintains protein balance in the body and supports immune and nervous systems.

Tryptophan: primary functions include building proteins, aiding mood regulations and supporting sleep. 

Valine: stimulate muscle growth and regeneration. 

Applied Nutrition’s Amino Fuel EAA provides 11g of amino acids per serving, including 9g of essential amino acids (EAAs). Formulated with all nine essential amino acids, it offers a convenient all-in-one solution to support your daily intake without the need to carefully combine multiple dietary sources.

Leucine 4K Capsules are also available from Applied Nutrition. Each tub provides 30 servings (180 capsules). Leucine is naturally found in high amounts in many animal-based foods, including lean meats, poultry, and fish. L-Leucine capsules provide a simple, convenient on-the-go source of this essential amino acid, making them ideal for anyone involved in intense physical activity. They can be taken either before or after a workout to fit easily into your routine.

Branched – Chain Amino Acids (BCAAs)

Branched-chain amino acids (BCAAs) are a group of 3 essential amino acids these are:

•    Leucine: 
•    Isoleucine 
•    Valine 

Their chemical structure features a branched side chain, which affects the way these amino acids are processed in the body, hence the name branched-chain amino acids (BCAAs). They are widely used in sports nutrition due to their important role in supporting muscle recovery and exercise performance.

Applied Nutrition’s BCAA Amino Hydrate is a sugar-free intra-workout and recovery drink designed to support performance, endurance, and hydration during training. Formulated with clinically tested BCAAs, it helps maintain training intensity while supporting recovery throughout your session.

The formula also includes electrolytes and essential salts to aid hydration, alongside added citrulline to promote blood flow and enhance your workout pump. For best results, sip throughout your workout to stay fuelled, hydrated, and performing at your best.

If powders aren’t your preference but you still want the benefits of BCAAs, Applied Nutrition’s BCAA 6K Capsules offer a convenient alternative. Each serving delivers 6000mg of BCAAs, along with added vitamins B6 and B12 to support energy metabolism, help reduce fatigue, and aid muscle recovery after training.

Functional Aminos 

Beyond EAAs and BCAAs, several amino-based compounds play targeted roles in performance and recovery:

•    Glutamine → supports recovery and muscle repair, helping the body recover after intense training

•    Citrulline → promotes healthy blood flow and can enhance workout performance and endurance

•    Taurine → helps maintain hydration and supports optimal muscle function

•    Carnitine → involved in energy metabolism, assisting the body in converting fat into usable energy

Together, these functional aminos complement traditional protein and amino acid intake by targeting specific aspects of performance and recovery. From supporting energy metabolism and hydration to enhancing blood flow and muscle repair, they can help athletes get more out of both training and recovery. We offer a full range of functional amino supplements on our website, making it easy to find the products that best support your individual training goals and performance needs. 

Final thoughts 

Amino acids are fundamental to performance, recovery, and overall health, making them an important consideration for anyone looking to support an active lifestyle. Whether you're focused on building muscle, improving endurance, enhancing recovery, or simply ensuring you're meeting your daily amino acid requirements, understanding the differences between EAAs, BCAAs, and functional aminos can help you make informed choices. With a wide range of high-quality amino acid supplements available, Applied Nutrition offers convenient solutions to support every training goal, helping you stay fuelled, recover effectively, and perform at your best.

Frequently Asked Questions

Question: What are amino acids? 

Short Answer: Amino acids are the building blocks of protein that help the body grow, repair tissues, produce hormones and enzymes, and support overall health. There are 20 amino acids in total, including 9 essential amino acids that must be obtained through food.

Question: What amino acids are essential?

Short Answer: The nine essential amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. These amino acids are considered essential because the body cannot produce them on its own, so they must be obtained through food.

Question: What amino acids should I take?

Short Answer: The most suitable amino acid supplement depends on your individual goals. BCAAs (leucine, isoleucine, and valine) are commonly used to support muscle recovery and growth, tryptophan may help with mood and sleep, while L-arginine is often taken to improve circulation and blood flow.

Question: What are the benefits of amino acids?

Short Answer: Amino acids provide many important health benefits, as they are essential for supporting key bodily functions such as muscle growth and repair, brain function, immune system health, hormone production, and overall tissue maintenance. They help the body perform and regulate a wide range of physiological processes necessary for good health and wellbeing.

Question: Do amino acids help with weight loss?

Short Answer: Amino acids may support weight loss by helping to preserve muscle mass, increase feelings of fullness, and support metabolism. However, they are not a direct weight-loss solution and work best alongside a balanced diet and regular exercise.