Naoyuki HAYASHI earned his PhD in medicine from Osaka University, Japan, in 1999. From 1995 to 2004, he was a research associate at Osaka University, Japan, where he engaged in exercise physiology, in particular, neural mechanisms controlling peripheral blood flow during exercise. During this time, he spent one year in UC Davis as a visiting researcher. From 2004 to 2015, he was an associate professor at Kyushu University,where his research interest was human physiology. He found unique facial blood flow responses to preferred and non-preferred tastes, and ocular blood flow response to exercise in various conditions. Also he found an increase in post-prandial energy expenditure by eating slowly. At present, he is a professor at Institute for Liberal Arts, Tokyo Tech. His ongoing projects in human physiology are energy expenditure and blood flow responses to exercise, eating, massage and mental tasks.