Professor Monica Levy Andersen is Master in Psychobiology and PhD in Psychobiology by Universidade Federal de São Paulo, UNIFESP, Post Doctoral Fellow at Division of Neuroscience Yerkes National Primate Research Center - Emory University. Professor of Division of Sleep at Department of Psychobiology of Universidade Federal de São Paulo (UNIFESP). Visiting Professor of Division of Neuropharmacology at Yerkes National Primate Research Center - Emory University and Division of Neurosciences of New England Primate Research Center - Harvard Medical School. Professor Sergio Tufik is Master in Physiology and PhD in Pharmacology by Universidade Federal de São Paulo, UNIFESP. Full professor of Division of Sleep at Department of Psychobiology of Universidade Federal de São Paulo, UNIFESP.