one of the most abundant of all 20 amino acids, making up
over 60^ of all skeletal muxcle tissue in the body. In
addition to improving athletic endurance and building muscle,
it may also promote a healthy gastrointestinal tract.
Because L-glutamine is an energy source, it can be
significantly reduced once exercise has taken place.
Glutamine levels will remain low until the person has
completely recovered from the exercise.