What is it?
HMB is actually a metabolite of the amino acid L-leucine. L-leucine is one of three amino acids known as the branched chain amino acids or BCAA (isoleucine and valine being the other two).
It has been known for a long time that BCAA play a critical role in the turn over of lean body tissues (muscle) and is muscle sparing (i.e. anti-catabolic) in a variety of muscle wasting states. Of the three BCAA, L-leucine appears to be the most important to preserving hard earned muscle mass and intense exercise and certain disease states have been shown to eat up a great deal of L-leucine. So far so good!
What is it?
The ‘non-essential’ amino acid glutamine has been getting a great deal of attention over the past few years in sport nutrition publications and scientific journals and for good reason. Though it might not be considered “essential,” glutamine appears to have many potential benefits for people interested in gaining new muscle and/or preserving that hard earned muscle.
What is it supposed to do?
Glutamine is required for countless functions in the human body from immune system function, to liver function, to gastrointestinal integrity, to name only a few. Supplement companies have taken to adding glutamine to various products and athletes have taken to adding glutamine to their diet.
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