Post Anesthetic Shivering (PAS) is a common phenomenon in caesarean section. Recent study reported there were 37-57% cases from all caesarean section procedure. It is caused by anesthesia procedure that can depressed thermoregulation system. Shivering must be prevented because it can cause patient discomfort. Clonidine is α2 adrenergic partial agonist that can be used as adjuvant of spinal ane…