This paper presents potential applications of biological sciences and adaptive behaviors to group dynamics in a facilitated environment. Although traditional psychology or sociology may be thought of when dealing with groups, this paper goes beyond those fields to explore physiology, biorhythms, human ethology, herd instinct, group think, territoriality, cohesion, team work, learned helplessness, human nonverbal communication, decision fatigue, and media multitasking. Underlying biological principles dealing with phylogenetic and physiological behavioral adaptations are described, along with their potential influence on meeting participants in facilitated gatherings.  IAF Journal #12