Tribulus terrestris is a herb that comes from a plant found in Asia. It has been used in the past by many cultures for the treatment of liver, kidney and cardiovascular diseases. It has also been used as a diuretic and to treat infertility. In recent years strength athletes in eastern Europe are reputed to have used it to enhance performance.


It is believed to enhance testosterone levels by encouraging the production of lutenizing hormone. Studies have shown that when lutenizing hormone levels are increased, the natural production of testosterone also increases.


It is difficult to assess the validity of tribulus as a muscle growth enhancer because none of the studies carried out have appeared in peer-reviewed scientific journals. Its proponents do suggest that it can prove useful when stacked with 100 mg of DHEA and 100 mg of androstenedione but this takes us into the equally uncertain territory of prohormones which we have covered in a separate article.


If you do wish to experiment with tribulus you can take 750-1250 mg per day divided between meals. Some people experience stomach upsets but this can be minimized by taking it with food. There’s no guarantee that tribulus terrestris will help you grow bigger muscles but many users report a much improved sex drive!

Richard Mitchell is the creator of the bodybuildingadvisor.com website that provides guidance and information to athletes at all levels of bodybuilding experience. Go to Bodybuilding Advice to learn more about the issues covered in this article.

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HMB stands for beta-hydroxy beta-methylbutyrate. It is a metabolite of leucine, one of the body’s essential amino acids, with small amounts found naturally in catfish, grapefruit and alfalfa.


It has become very popular amongst athletes in recent years mainly due to the role it plays in the synthesis of muscle tissue. HMB has been subjected to many studies that have reached some interesting conclusions. One study showed that supplementation with 3 grams of HMB per day increased participants’ strength by a factor of three compared with placebo takers. Supplementing with the same amount also saw a reduction in bad cholesterol compared with the placebo group.


Clearly there is significant scientific backing for claims that HMB can speed up muscle growth, strength, endurance and fat loss. There are no known side effects when taken properly in amounts ranging from 3-5 grams each day. It should be taken before training or at bed time for best results.

Richard Mitchell is the creator of the bodybuildingadvisor.com website that provides guidance and information to athletes at all levels of bodybuilding experience. Go to Bodybuilding Advice to learn more about the issues covered in this article.

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L-carnitine is synthesized in the body from the amino acids lysine and methionine but it can also be found in nutritional sources such as red meats, dairy products and avocados. Its main role in the body is to help metabolize food into energy. L-carnitine does this by transferring long chain fatty acids into mitochondria where they are oxidised to produce energy.


L-carnitine is heart friendly and has been used for many years in the treatment of heart disease. Studies have shown that it can increase the heart’s output and function, stimulate energy supply to the heart and improve overall cardiac performance.


Many bodybuilders use it for the following reasons:


1. It promotes muscle growth.


2. It increases energy.


3. It helps to burn fat.


4. It helps to prevent muscle fatigue.


L-carnitine is a relatively safe supplement provided the manufacturer’s recommendations are followed. As with all supplements, remain aware that l-carnitine could be contained in other products so read the labels carefully to ensure your daily intake does not exceed four grams.

Richard Mitchell is the creator of the bodybuildingadvisor.com website that provides guidance and information to athletes at all levels of bodybuilding experience. Go to Bodybuilding Advice to learn more about the issues covered in this article.

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Lysine is an essential amino acid therefore it must be obtained from the diet as the body cannot produce its own. It is an essential building block for all protein in the body and can be found in animal meats, fish, dairy products, legumes and brewer’s yeast. It performs many useful functions in the body and has proved to be especially useful in treating herpes and cold sores. Lysine also increases the absorption of calcium so it may help to prevent and treat osteoporosis.


To the bodybuilder, lysine offers many benefits:


1. It helps build muscle protein.


2. It helps maintain nitrogen levels.


3. It supports the production of hormones.


4. It speeds up recovery from injury or overtraining.


Although lysine can be readily obtained from many foodstuffs, supplementation can enhance the effects noted above. No problems have been reported with normal usage but high doses exceeding 15 grams can cause stomach problems and cramp.

Richard Mitchell is the creator of the bodybuildingadvisor.com website that provides guidance and information to athletes at all levels of bodybuilding experience. Go to Bodybuilding Advice to learn more about the issues covered in this article.

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Taurine is the second most abundant amino acid in the muscle after glutamine. It performs several useful functions and can act in a way similar to creatine in that it expands cells by helping the muscle to hold more water, thus increasing cell volume. The added benefit for bodybuilders is that these expanded muscle cells boost hydration and stimulate greater protein synthesis giving an enhanced muscle fullness.


The best time for bodybuilders to take taurine is thirty minutes before training and again immediately afterwards as this will heighten the effect of training. With any amino acid supplement overdosing can lead to weakness and nausea so care should be taken in applying small doses and increasing them gradually until an optimum level is reached. Bear in mind that many protein powders and other supplements are fortified with amino acids so check the labels carefully. The manufacturer’s instructions should be followed in all instances.

Richard Mitchell is the creator of the bodybuildingadvisor.com website that provides guidance and information to athletes at all levels of bodybuilding experience. Go to Bodybuilding Advice to learn more about the issues covered in this article.

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BCAA stands for branched chain amino acids and is increasingly being recognized as an important supplement in the field of sports nutrition. In short the term refers to three essential amino acids - leucine, isoleucine and valine.


Amino acids are widely known as the building blocks of protein. When protein food is eaten it gets digested into individual amino acids and short chains of amino acids that are sufficiently small to be absorbed into the bloodstream. They are then used by the body to build and repair tissues amongst other things.


Amino acids are split between those classed as essential and those labelled non-essential. This simply means that essential amino acids cannot be made by the body, whereas non-essential amino acids can. There are nine essential amino acids and each must be obtained from the diet. The nine essential amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine.


Non-essential amino acids are just as important as the essential variety and the term simply means they can be made by the body from vitamins and other amino acids. The non-essential amino acids are alanine, arginine, asparagine, aspartic acid, cysteine, cystine, glutamic acid, glutamine, glycine, proline, serine and tyrosine.


The BCAA’s are especially important to athletes because they are metabolized in the muscle rather than the liver. This means that they can be used either to build new proteins or be burned as fuel to create energy. Supplementing with BCAA’s has been shown to result in measurable gains in both muscle strength and size. Taken before a workout BCAA’s can improve performance and delay the onset of fatigue. They also operate as anabolic agents allowing the body to burn fat and not muscle.


As a supplement that has no reported side effects, branched chain amino acids offer many benefits to the serious bodybuilder.

Richard Mitchell is the creator of the bodybuildingadvisor.com website that provides guidance and information to athletes at all levels of bodybuilding experience. Go to Bodybuilding Advice to learn more about the issues covered in this article.

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