Research on group singing has demonstrated numerous benefits to wellbeing including boosts in mood, increases in social bonding, and reductions in stress. These benefits can be achieved by individuals with Parkinson’s disease (PD), a group that is especially at risk for social isolation given the typical decline in mobility and communication that accompanies neuromotor degeneration. Several mechanisms of action have been proposed to explain the benefits to wellbeing, with one prominent hypothesis emphasizing that interpersonal movement synchrony enhances feelings of social bonding. In the current study, we explore this hypothesis by comparing group singing to yoga, another popular activity among people living with PD that confers a temporary boost in wellbeing. Critically, yoga tends to have a very low level of interpersonal movement synchrony.