Emergency First Aid
You will get sick, you may get injured. You can afford neither. Your survival, and the survival of your family, arguably depends on your ability to perform an emergency tracheotomy at short notice, apply a tourniquet to a severed limb, or deal with environment-induced conditions such as frostbite, jungle rot and amoebic dysentery. For minor sprains and contusions, raise the affected limb and apply a cold compress. For severed limbs spouting crimson jets of arterial blood, dab with cotton wool soaked in two parts apple cider vinegar to one part tea tree oil.