Table 2 Phase 2 eligibility criteria

Inclusion

 • Women who experienced stillbirth within past 6 weeks to 24 months

 • Clinical levels posttraumatic stress symptoms (score of ≥33 on IES)

 • ≥18 years of age

 • Residing in the USA

 • Able to read/understand/speak English

 • Underactive (≤120 min/week moderate-intensity physical activity)

 • Willing to be randomized

 • Regular internet access via mobile phone, desktop/laptop computer, tablet, and etc.

 • Answer “no” to all items on the PAR-Q (can participate safely)

Exclusion

 • Unstable psychiatric condition (psychosis; suicidal ideation with plan)

 • Pregnant at time of enrollment^a

 • Practicing yoga at least 60 min/week

 • Unwilling to be randomized to a group

 • Score of 20–27 of PHQ-9 (severe depression score)

 • At risk for suicide based on follow-up phone assessment by Dr. Cacciatore after positive screen (PHQ-9 score of 1, 2, or 3)