Manny Majola | Online Health Consultant on Instagram: "Tyrosine is a precursor to dopamine and epinephrine (adrenaline). That means your body uses tyrosine to make the neurotransmitters that help with focus, motivation and stress response. During periods of high stress, heavy training, long work days or intense cognitive load, those neurotransmitters get depleted faster. This is why people often feel flat, foggy or mentally cooked by mid-afternoon, even if nutrition has been solid. On days I kno