Each person exhibits a personal rhythmic tempo (e.g., speech, gestures, gait) ranging from 60-120 bests per minute (with the majority clustered between 70-80 beats per minute). Humans are most compatible with those who have a similar rhythmic tempo. (Torres, Carol A., and Louis R. Torres. Notes on Music. p 11-12. OR: TorresLC Ministries, 2004.)