After a turkey meal, blood levels of tryptophan rise, which may amplify the pineal's production of such serotonin, but not melatonin, whose
synthesis rate depends on the amount of enzymes available for the
subsequent biochemical reactions to occur, Wurtman says.
As muscle damaging exercise has previously been reported to decrease GLUT4 translocation and
subsequent rates of muscle glycogen resynthesis [49], the possibility that it also may impart a negative effect on protein transporters and
rates of protein
synthesis can not be discounted.