The Maya Empire, centered in the tropical lowlands of what is now Guatemala, reached the peak of its power and influence around the sixth century A.D. The Mayans were one of the most dominant and sophisticated civilizations of Mesoamerica, a historical region ＿＿（66）＿＿ Mexico and most of Central America. In its heyday (250-900 CE), the ancient empire built magnificent cities as well as developed advanced writing, mathematics and astronomical systems ＿＿（67）＿＿ the foundation of modern science. Just as complex ＿＿（68）＿＿ the holistic healing traditions of the Maya, which incorporate herbalism, cosmovision and spirituality. Mayan healers, or shamans, believe the body and the soul are one, and ＿＿（69）＿＿ are the result of imbalances in the flow of ch’ulel, or life force, within and around the patient. Besides prescribing herbal remedies, shamans also ＿＿（70）＿＿ that involve prayers, fasting, sweating, offerings and massages to aid recovery.