Abstract: | In Bowling Alone Robert Putnam considers the possibility that the growth of private health clubs and the rising rates of membership to such clubs might represent a counter-trend to his thesis on the decline in social capital. In this paper I explore this idea using ethnographic data and social network analysis. I show both that and how networks form in health clubs and I discuss the ways in which these networks constitute social capital for their members. In addition, however, I explore the 'dark side' of this form of social capital. I argue that high integration amongst some members of a fitness class can generate a power differential between those members and other, less integrated members who experience this negatively. Furthermore, with an eye on Burt's (2005 ) important thesis on brokerage and closure, I argue that brokerage between relatively closed clusters of agents can lead to inter-group rivalry and conflict, which, in turn, is experienced negatively by those involved. |