My legs feel real heavy when I walk. ALL my EKG'S came back abnormal. Heart echo, ct of heart, and stress test came back normal. Also, my left hand stays numb with me all the time and left foot to, and burns. I fell 2 weeks ago. Lost my balance. My assistant. Cardiologist, told me to go to primary DR., and see about having a MRI on my neck. Please, tell me what you think is going on with me. Thank you!