National Program to Overcome Pelvic Pain studY (POPPY)

Inclusion Criteria: * Women (individuals reporting female sex assigned at birth who self-identify as women or non-binary) aged 18 years or older * Report chronic or recurrent pain in the pelvis (between or below the anterior iliac crests) for at least 6 months * Report at least moderate pain intensity based on a screening pain log * Report prior clinical evaluation of their pelvic pain by a healthcare professional including at least a superficial pelvic exam * Willing to refrain from initiating new clinical treatments that may affect their pain during the study period Exclusion Criteria: * Report pelvic pain occurring exclusively with menses or exclusively during sexual intercourse (although candidates with at least some pain between menses or intercourse are still eligible) * Participation in organized yoga classes or muscle strengthening programs (e.g., Pilates) in the past 4 weeks, or any prior yoga therapy specifically directed at pelvic pain * Lacking technical requirements to complete intervention classes by video, including no access to broadband internet or a Zoom-compatible device larger than a smartphone \[display screen at least 7 inches in diagonal\] (although the study team may loan devices to participants from underrepresented backgrounds) * Currently pregnant (by self-report or screening test), pregnant within the past 12 weeks, or planning pregnancy during the study period * Diagnosed with an alternate, reversible cause of pelvic pain that is unlikely to respond to yoga and requires another treatment modality (e.g., current pelvic infection or a gynecologic dermatosis) * Surgery or irradiation to the genital or pelvic structures within the past 12 weeks, or anticipating upcoming surgery or irradiation to these structures during the study period * Initiation, dose escalation, or weaning of pharmacologic agents that may affect pelvic pain severity in the past 4 weeks, such as analgesics, antidepressants, or anticonvulsants-(however, women on stable doses of these medications for at least 4 weeks will still be eligible) * Use of formal psychological therapies specifically for pelvic pain (e.g., systematic desensitization, cognitive therapy, relaxation therapy) within 4 weeks of screening, or plans to engage in these therapies during the study period * Unable to walk up a flight of stairs or at least 2 blocks on level ground (i.e., functional capacity \< 4 METs), or unable to get up from a supine to a standing position without assistance * Part…