The 39th Annual Meeting of the Japan Society of Sleep Research was held from July 3 through 4 in Tokushima Prefecture. Six speakers, including WOL CEO Mitsugu Watanabe, were chosen for the Best Presentation Award. A total of 346 presentations were given on the occasion by research institutions including Kyoto University Graduate School of Medicine, Kyushu University Graduate School of Medical Sciences, Tokyo Medical and Dental University and Keio University School of Medicine.