Anxiety & Depression Association of America

. In order to be eligible to participate in this study, an individual must meet all of the following criteria: 1. Have elevated depressive symptoms, defined by: a) a score of 1 or greater on the PHQ-2 and 5 or greater on the PHQ-8 at screening; and b) a score of 10 or higher on the Quick Inventory of Depression-Adolescent Version-Clinician Rating (QIDS-A-CR), including either sad mood or anhedonia; 2. Be aged 12-18; 3. Be allowed to participate in gym class or sports at school (or, if not, medically cleared by their primary care provider or other relevant healthcare provider); 4. Be able to read and write in English; 5. Provide consent/assent appropriate to age; 6. Be able to attend group session times: 7. Have access to a private space once per week that is suitable for synchronous intervention sessions. Set A

Adolescents will be excluded if they: 1. Meet criteria for lifetime bipolar I disorder, a current psychotic disorder, or current anorexia or bulimia; or currently be in treatment for anorexia or bulimia; 2. Meet criteria for substance use disorder (SUD) in the previous 12 months, with current symptoms of sufficient severity to interfere with study participation; 3. Have severe depression (QIDS-A-CR score > = 16); 4. Have moderate or high risk for suicide (Response of "yes" on CSSRS-Screener item 3,4,5,6 with regard to the past 3 months). 5. Have suicide ideation (Response of "yes" on CSSRS- Screener item 2) and do not currently have other mental health treatment (pharmacotherapy or psychotherapy) 6. Are pregnant; 7. Are currently (past 4 weeks) engaged in yoga classes or in gCBT; 8. Have had substantive changes in other psychiatric treatment in the previous 4 weeks (e.g., started a new depression medication; stopped or started attending psychotherapy). 9. Have a sibling or other household member active in a study intervention (for this study) at the same time. Set B Eligibility criteria Participants who are not eligible for Set A may be enrolled in Phase 2 Set B, such that they will be eligible to attend classes but their data will not be considered in our main analyses. Set B Inclusion Criteria. In order to be eligible to participate in this study, an individual must meet all of the following criteria: 1. Have elevated depressive symptoms, defined by: a) a score of 1 or greater on the PHQ-2 and 5 or greater on the PHQ-8 at screening; and b) a score of 6 or higher on the Quick Inventory of Depression-Adolescent Version-Clinician Rating (QIDS-A-CR), including either sad mood or anhedonia; 2. Be aged 12-18; 3. Be allowed to participate in gym class or sports at school (or, if not, medically cleared by their primary care provider or other relevant healthcare provider); 4. Be able to read and write in English; 5. Provide consent/assent appropriate to age; 6. Be able to attend group session times: 7. Have access to a private space once per week that is suitable for synchronous intervention sessions. Set B Exclusion criteria: Adolescents will be excluded if they: 1. Meet criteria for lifetime bipolar I disorder, a current psychotic disorder, or current anorexia or bulimia; or currently be in treatment for anorexia or bulimia; 2. Meet criteria for substance use disorder (SUD) in the previous 12 months, with current symptoms of sufficient severity to interfere with study participation; 3. Have severe depression (QIDS-A-CR score > = 16); 4. Have moderate or high risk for suicide (Response of "yes" on CSSRS-Screener item 3,4,5,6 with regard to the past 3 months). 5. Have suicide ideation (Response of "yes" on CSSRS- Screener item 2) and do not currently have other mental health treatment (pharmacotherapy or psychotherapy) 6. Are pregnant; 7. Are currently (past 4 weeks) engaged in yoga classes or in gCBT; 8. Have a sibling or other household member active in a study intervention (for this study) at the same time.