Set A 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 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 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 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.
