Lucci slept literally under the stars in mont blanc at subzero degrees with only a sleeping bag n a baseball jacket and no tent; but still managed to wake up alive with a body temperature of 37 n ten toes still intact.

to get warmth fir hands held neck
spent night feeling carotid pulse, to monitor my pulse and to make sure that I am still alive!
Oxygen saturation was taken the next morning. 93%.