I suffer from constant fatigue and somatic symptoms which my GP assigns to anxiety even though I have no cognitive anxiety. I get symptoms like lightheadness and muscle tension along with severe fatigue. My symptoms improve by about 80% if I take 150mg of magnesium glycinate before bed , I just want to know whether this is just a placebo effect or is magnesium or glycine eliminating this symptoms because I have been trying to stop this supplement and all the symptoms come back.