The hardest part is the relaxing… also realize that your hands and feet will not help you, you have to use the large muscles in your arms and legs. It’s best to never get in this situation, but just in case I recommending watching this several times. *Editing to explain that your hands and feet will be too cold for the muscles to work, and probably numb as well, but you will have the ability to use the larger muscles that have retained heat.