Prior research has demonstrated that exercise is more fun and engaging when we exercise with others. Yet for many people, it is challenging to exercise with partners that are co-present due to several reasons (e.g. lack of access to a partner). In this thesis, I explore the challenge of designing an exercise system that effectively embodies a remote participant. The result of my exploration is HappyFeet, a dancing system that supports the dancing experience for remotely located partners. HappyFeet uses 3D representations of dancers’ feet in a shared virtual dance space to emphasize timing and placement of feet. My work demonstrates that the feet embodiment provides the dancers with a better understanding of dance moves, helps them to synchronize timing of their dance steps, and provides them with a dance space in which they can freely create dance moves with their partners.