Abstract
In this paper I focus on possible boosting factors for the sense of we-agency in joint actions. My aim is to shed light on a factor that, until now, has received little or no consideration at all, and that I call _vitality attunement_. I argue that vitality attunement stands between two other boosting factors for the sense of we-agency—i.e., rhythmic alignment and emotional attunement. Investigating two examples of joint action, i.e., dancing and joint musical performances, I show that vitality attunement is not reducible to either of the other two boosting factors and that it deserves to be studied on its own as a distinctive boosting factor for the sense of we-agency. In order to argue for my thesis, I first introduce some of the most crucial aspects of the sense of we-agency in joint actions, then I analyze how rhythmic alignment and emotional attunement have been argued to foster such an experience, and finally I introduce vitality attunement, describing how it too can be a boosting factor for the sense of we and of we-agency.