In a series of previous studies, we have established a method to quantitatively analyze intellectual resonance based on a concrete message. This method allows us to analyze how and to what extent intellectual resonance occurs in a group, through the use of digital information such as numbers and characters. In this method, participants take their seats and fill out special cards according to game instructions. The degree of coincidence among neighboring participants is then examined and scores are assigned to the results. The scores are evaluated using mathematical tools within a probability theory framework. In this study, we analyzed the data of 37 trials conducted by 38 participants over the course of ten weeks. The participants were instructed to carry out three different types of trials in sequence under two types of game rules, i.e. "ordinary game" and "8-kanji game" rules. The three types of trials were as follows : one with an aim for resonance("positive trial") ; one with an aim for no resonance("negative trial") ; and one with no aim("neutral trial"). Persons who obtained high resonance scores were classified as "synchronizer". The purpose of this study was to characterize the synchronizers through correlation analysis between physiological indices and accumulated resonance scores. Our results revealed that synchronizers have the following tendencies : higher age ; female ; low body height ; low body weight ; low body mass index ; low grip strength ; as well as other bad physical conditions. These results show that a synchronizer, defined in terms of the resonance score, was not an abstrat concept determined through the stochastic process, but a real entity characterized from concrete physiological features.