question: I'm a 62 yr. old male, 5'9, 186lb's. No medical problems or history. Was diadnosed at a long time ago w/ Scheuermans disease ? not sure if I spelled it ok. My question is ; when I walk at times my chest tightens and both my arms go numb my whole upper torso sot of goes numb and I have to stop and get back to normal and I am ok. What causes this ?