Your chest constrict comment reminded me of this quote from Messner on the first solo ascent of Everest. "When I rest I feel utterly lifeless except that my th

Your chest constrict comment reminded me of this quote from Messner on the first solo ascent of Everest. "When I rest I feel utterly lifeless except that my throat burns when I draw breath...I can scarcely go on. No despair, no happiness, no anxiety. I have not lost the mastery of my feelings, there are actually no more feelings. I consist only of will."