 [ Symptoms ] why do i get a normal bp reading with my arm resting on my head  if i take my bp in the recommended position it is always high if i rest my arm on top of my head my bp is normal can you tell me why and would this be a true reading [ Disease ] it is simple gravity the most accurate bp reading is with your arm at heart level when you raise it above your head you will get a falsely low reading because your heart has to pump the blood higher