Inclusion Criteria:  ≥18 years of age primary diagnosis of Stage I-IIIa breast cancer completed primary treatment(s) proficient in written and spoken English access to the Internet and a computer with videoconferencing capabilities  Exclusion Criteria:  colour-blind since the objective cognitive tests require participants to distinguish between colours regular yoga practice defined as ≥2 times/week major cognitive disorder(s) or impairment(s) (score ≤21 on the Telephone Interview of Cognitive Status)