Interactive Gentle Yoga in Improving Quality of Life in Patients With Stage I-III Breast Cancer Undergoing Radiation Therapy

Inclusion Criteria: * Participants must be newly diagnosed with a histologically or cytologically confirmed breast cancer stage I-III (ductal carcinoma in situ \[DCIS\] is allowed) * Participants must have a score \>= 8 on the depression subscale of the Hospital Anxiety and Depression Scale \[HADS\], indicating clinically significant depressive symptoms * Participants must be: * \>= 2 weeks post-surgery for women who have had a lumpectomy, a lumpectomy with an axillary node dissection or a mastectomy without reconstruction OR * \>= 4 weeks post-surgery for women who have had mastectomy with reconstruction * Participants must be scheduled to begin the standard 6-week course of radiation therapy (RT) within 4 weeks * Participants must have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2 * For the duration of RT, participants must have access to an existing broadband internet connection and a computer (laptop or desktop; tablets are not sufficient) with a full-sized computer screen and the following specifications: * Windows® 8, RT, 7 Vista, XP or 2003 Server or Mac operating system (OS)® X 10.6 (Snow Leopard®) or newer * Internet Explorer ® 7.0 or newer, Firefox® 4.0 or newer, Safari 3.0 or newer or Chrome or newer (available for free download) * Participants must be able to understand written/spoken English since the yoga classes will be taught in English * Ability to understand and the willingness to sign an institutional review board (IRB)-approved written informed consent document Exclusion Criteria: * Participants who have practiced yoga regularly (defined as at least once per week on average) in the past 3 months * Participants who have regularly (defined as 4 or more days per week) engaged in vigorous physical activity (i.e., causes heavy breathing, sweating, rapid fatigue; can be sustained for short periods, like running or swimming strongly) over the past 4 weeks * Participants who are being treated with a shortened course of radiation therapy (i.e. "Canadian" fractionation less than 5 weeks, partial breast radiation therapy)