This paper considers the yoga practices at the Sivananda Yoga Vedanta Center as “disciplinary” practices. Yoga has a long history of being interpreted as “discipline”; this paper will consider how it is disciplinary and what is being disciplined. To this end, this paper will frame Sivananda yoga as a discipline from two perspectives: Sarah Strauss’ characterization of yoga as an “oasis regime”; and Michel Foucault’s view of discipline as minute “carceral” elaborations of power. These approaches are contrasted and ultimately, following Foucault, yoga disciplines are understood as being constitutive of the subject. The disciplinary character of yoga at the Sivananda Yoga Vedanta Center is demonstrated using two objects as examples: a religious diary, and a set of japa mālā beads.