An explanation as to why tryptophan makes an individual sleepy is that tryptophanis changed to serotonin and this calms an individual down and makes the person sleep.
Tryptophan simply means an amino acid that is needed for growth in infants. It's also needed for the production of the proteins, muscles, enzymes in the body.
Tryptophan makes an individual sleepy because when we eat a food that contains tryptophan, it is changed to a chemical called serotonin by the brain and this calms an individual down and makes the person sleep.
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