LACKING MOTIVATION? The answer may be low glutathione levels! Feeling "motivated" equates to the effort it takes to overcome a "cost" in pursuit of the "reward". In your brain, much of this Acute Ingestion of Dietary Proteins Improves Post Exercise Liver Glutathione in Rats in a Dose Dependent Relationship with their Cysteine Content The Journal of Nutrition The Determination of Blood Glutathione by Amperometric Titration Journal of Clinical Pathology What is the role of glutathione in the red blood cells?