A circulation apparatus and method for use of the same are disclosed. In one embodiment, tubing provides gas communication between an air intake portion disposed at a first end and a breathing sub-apparatus at a second end. A bladder, which may be incorporated into a clothing garment or sleeping gear, is coupled to the tubing between the first and second ends. At least one valve is disposed within the tubing in order to selectively allow gas communication from the air intake portion to the breathing sub-apparatus and selectively allow gas communication from the breathing sub-apparatus to the bladder. Following an inhalation, heated exhaled air is circulated through the bladder to maintain a healthy core temperature and prevent hypothermia.