Inclusion Criteria:

• * Written informed consent;
• * age 18-65 years;
• * DSM-5 diagnosis of
• * schizophrenia,
• * schizoaffective disorder,
• * bipolar 1 disorder,
• * DSM-5 diagnosis of schizophrenia, schizoaffective disorder, or bipolar 1 disorder including those with a co-morbid
• * alcohol use disorder or substance use disorder;
• * clinically stable;
• * no psychoactive medication changes for past 4 weeks;
• * clinical global impression-severity (CGI-S) scores mild to moderately ill

Exclusion Criteria:

• * Unable to provide written informed consent;
• * intellectual disability (i.e., severe enough to impact understanding of yoga-based exercises) based on chart or IQ\<80 on the Wechslet Abbreviated Scale of Intelligence-II (WASI-II);
• * disability or illness precluding yoga-based exercises or wellness lifestyle program, e.g.,
• * current or recent angina (\<6 months),
• * history of myocardial infarction in the past year (unless permission is obtained from the primary care physician),
• * uncontrolled hypertension or hypotension;
• * neurological illness complicating diagnosis / cognitive evaluation, e.g.,
• * dementia,
• * stroke or head injury;
• * physical problems that preclude training for yoga-based exercises / wellness lifestyle program, e.g.,
• * severely impaired vision;
• * ongoing treatment that includes more than one hour per week of relaxation and mind-body based stress reduction strategies related to yoga