The participant's ear temperature will be recorded every 5 minutes. The investigators will replace the cooling element every 20 minutes and continue to record the participant's ear temperature every 5 minutes. A total of 6 cooling elements will be used over 2 hours. The heart rate and blood pressure of the participant will be checked and recorded every 20 minutes when cooling element is replaced. The participant's bedside shivering assessment scale (BSAS) will also be recorded during the study.